共用题干Aromatherapy(芳香疗法)1.Aromatherapy is a form of alternative medicine which is based on the use of very concentrated essential oils from the flowers,leaves,bark,branches or roots of plants which are considered tohave healing properties.In aromatherapy these powerful oils are mixed with other oils,such as almond(杏仁)oil,or the are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air,or applied as a compress(敷药).2.Many people have aromatherapy massages(按摩),and depending on the treatment a person is having,the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3.Practitioners of aromatherapy believe that the aroma of the essential oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functions of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomia (失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4.However,while aromatherapy may have real effects that promote a sense of well-being,some traditional medicine practitioners remain doubtful about its powers.While research has confirmed that aromatherapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.Paragraph 2_____A:Current Research Into AromatherapyB:Aromatherapy and Conventional MedicineC:Different Views About AromatherapyD:Introduction to AromatherapyE:Doubts About the Benefits of AromatherapyF:Personalized Aromatherapy Massage
共用题干
Aromatherapy(芳香疗法)
1.Aromatherapy is a form of alternative medicine which is based on the use of very concentrated essential oils from the flowers,leaves,bark,branches or roots of plants which are considered tohave healing properties.In aromatherapy these powerful oils are mixed with other oils,such as almond(杏仁)oil,or the are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air,or applied as a compress(敷药).
2.Many people have aromatherapy massages(按摩),and depending on the treatment a person is having,the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.
3.Practitioners of aromatherapy believe that the aroma of the essential oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functions of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomia (失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.
4.However,while aromatherapy may have real effects that promote a sense of well-being,some traditional medicine practitioners remain doubtful about its powers.While research has confirmed that aromatherapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.
Aromatherapy(芳香疗法)
1.Aromatherapy is a form of alternative medicine which is based on the use of very concentrated essential oils from the flowers,leaves,bark,branches or roots of plants which are considered tohave healing properties.In aromatherapy these powerful oils are mixed with other oils,such as almond(杏仁)oil,or the are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air,or applied as a compress(敷药).
2.Many people have aromatherapy massages(按摩),and depending on the treatment a person is having,the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.
3.Practitioners of aromatherapy believe that the aroma of the essential oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functions of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomia (失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.
4.However,while aromatherapy may have real effects that promote a sense of well-being,some traditional medicine practitioners remain doubtful about its powers.While research has confirmed that aromatherapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.
Paragraph 2_____
A:Current Research Into Aromatherapy
B:Aromatherapy and Conventional Medicine
C:Different Views About Aromatherapy
D:Introduction to Aromatherapy
E:Doubts About the Benefits of Aromatherapy
F:Personalized Aromatherapy Massage
A:Current Research Into Aromatherapy
B:Aromatherapy and Conventional Medicine
C:Different Views About Aromatherapy
D:Introduction to Aromatherapy
E:Doubts About the Benefits of Aromatherapy
F:Personalized Aromatherapy Massage
参考解析
解析:文章第一段的内容主要是对芳香疗法的简要介绍,讲述了芳香疗法这种特殊疗法的原理、特性以及人们对其的评价等相关内容。因此本题选D。
文章第二段讲述了芳香疗法按摩的方法和功效。并由“depending on the treatment a person is having…”和“The sessions are tailored to the…”可知,本段的主旨是Personalized Aromatherapy Massage,故选F。
文章第三段从各种方面描述了芳香疗法对人体的好处。由文中的“Practitioners of aromatherapy believe that…""Other claims in support of aromatherapy are that…"以及“It has alsobeen argued that…”可知,作者是从不同的角度展开描述的,故选C。
文章第四段从不同方面指出了芳香疗法对人体可能会产生的负面影响,故选E。
由文章第一段中的内容可知,芳香疗法主要使用由从植物的花、叶,皮、枝以及根茎中提取的精华油制成的溶液剂,这些溶液剂可以直接擦在皮肤上,喷洒于空气中,也可以作外敷药用。因此本题选D。
由文章第二段最后一句“The sessions are tailored to the individual's health and mood atthe time,so every session is unique.”可知,本题选A。
由文章第三段所描述的内容可知,一些人认为芳香疗法对人体具有多种功效。故本题选E。
文章第四段最后两句指出,关于芳香疗法的研究还是一个未知的新课题,还需要进行更多的探索,以形成关于其用途和功效的科学结论。故本题选B。
文章第二段讲述了芳香疗法按摩的方法和功效。并由“depending on the treatment a person is having…”和“The sessions are tailored to the…”可知,本段的主旨是Personalized Aromatherapy Massage,故选F。
文章第三段从各种方面描述了芳香疗法对人体的好处。由文中的“Practitioners of aromatherapy believe that…""Other claims in support of aromatherapy are that…"以及“It has alsobeen argued that…”可知,作者是从不同的角度展开描述的,故选C。
文章第四段从不同方面指出了芳香疗法对人体可能会产生的负面影响,故选E。
由文章第一段中的内容可知,芳香疗法主要使用由从植物的花、叶,皮、枝以及根茎中提取的精华油制成的溶液剂,这些溶液剂可以直接擦在皮肤上,喷洒于空气中,也可以作外敷药用。因此本题选D。
由文章第二段最后一句“The sessions are tailored to the individual's health and mood atthe time,so every session is unique.”可知,本题选A。
由文章第三段所描述的内容可知,一些人认为芳香疗法对人体具有多种功效。故本题选E。
文章第四段最后两句指出,关于芳香疗法的研究还是一个未知的新课题,还需要进行更多的探索,以形成关于其用途和功效的科学结论。故本题选B。
相关考题:
Which is NOT TRUE? ________A. The kangaroos can go over nine metres in one jump.B. Koalas like eating leaves from gum trees.C. Koalas use their voices to mark their homes.
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.Pruning should be done to__________.A.make the tree grow tallerB.improve the shape of the treeC.get rid of the small branchesD.make the small branches thicker
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.Trees become unhealthy if the gardener__________.A.allows too many branches to grow in the middleB.does not protect them from windC.forces them to grow too quicklyD.damages some of the small side branches
共用题干第三篇Only special plants can survive in the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds which drive small-sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring.Grasses and flowers in desert survive from one year to the next by existing through the long, hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time that the water from the spring rains disappears—ust a few weeks after it falls一such plants no longer need any.The perennials(多年生植物)have special features which enable them to survive as plants for several years. Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in a short time.The small shoot system,on the other hand,considerably limits water loss by evaporation(蒸发).Another feature of many desert perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation during the dry season.Then,in the next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.We can learn from the passage that the shoot system of the perennials_________.A:can help the perennials absorb less of the sun's rayB:decides the appearance of the perennials in desertC:limits the function of the perennials' branchesD:may prevent the perennials from losing much water
共用题干第三篇Only special plants can survive in the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds which drive small-sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring.Grasses and flowers in desert survive from one year to the next by existing through the long, hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time that the water from the spring rains disappears—ust a few weeks after it falls一such plants no longer need any.The perennials(多年生植物)have special features which enable them to survive as plants for several years. Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in a short time.The small shoot system,on the other hand,considerably limits water loss by evaporation(蒸发).Another feature of many desert perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation during the dry season.Then,in the next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.According to the passage,spring is the best time for plants in desert_________.A:to find a shady placeB:to get water for their growthC:to reduce water lossD:to enjoy the sunshine
共用题干第三篇Only special plants can survive in the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds which drive small-sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring.Grasses and flowers in desert survive from one year to the next by existing through the long, hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time that the water from the spring rains disappears—ust a few weeks after it falls一such plants no longer need any.The perennials(多年生植物)have special features which enable them to survive as plants for several years. Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in a short time.The small shoot system,on the other hand,considerably limits water loss by evaporation(蒸发).Another feature of many desert perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation during the dry season.Then,in the next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.Some grasses and flowers can survive in the desert because__________.A:they need little water for their survivalB:they bear long roots and the seeds are fit for dry weatherC:they stay in the form of seeds to wait for the right armiount of waterD:with long roots,they do not depend on the rain to get enough water
共用题干第三篇Only special plants can survive in the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds which drive small-sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring.Grasses and flowers in desert survive from one year to the next by existing through the long, hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time that the water from the spring rains disappears—ust a few weeks after it falls一such plants no longer need any.The perennials(多年生植物)have special features which enable them to survive as plants for several years. Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in a short time.The small shoot system,on the other hand,considerably limits water loss by evaporation(蒸发).Another feature of many desert perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation during the dry season.Then,in the next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.The last paragraph is mainly about__________.A:the comparison between plants in different areasB:the growth of new leaves in the rainy seasonC:water loss by evaporation in the dry seasonD:the changes in the leaves of the perennials
共用题干Plants in DesertOnly special plants can survive the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds that drive small,sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring.Grasses and flowers in desert survive from one year to the next by existing through the long,hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time the water from the spring rains disappears-just a few weeks after it falls-such plants no longer need any.The perennials(多年生植物)have special features that enable them to survive as plants for several years.Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in short time.The small shoot system,on the other hand,considerably limits water loss by evaporation(蒸发).Another feature of many perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter.This reduces their water loss by evaporation during the dry season.Then,in next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.A:Right B:Wrong C:Not mentioned
共用题干Aromatherapy(芳香疗法)1.Aromatherapy is a form of alternative medicine which is based on the use of very concentrated essential oils from the flowers,leaves,bark,branches or roots of plants which are considered tohave healing properties.In aromatherapy these powerful oils are mixed with other oils,such as almond(杏仁)oil,or the are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air,or applied as a compress(敷药).2.Many people have aromatherapy massages(按摩),and depending on the treatment a person is having,the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3.Practitioners of aromatherapy believe that the aroma of the essential oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functions of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomia (失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4.However,while aromatherapy may have real effects that promote a sense of well-being,some traditional medicine practitioners remain doubtful about its powers.While research has confirmed that aromatherapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.The uses and benefits of aromatherapy need to_____.A:suit different peopleB:be further exploredC:help the disabledD:be used externallyE:have healing effectsF:be promoted
共用题干Aromatherapy(芳香疗法)1.Aromatherapy is a form of alternative medicine which is based on the use of very concentrated essential oils from the flowers,leaves,bark,branches or roots of plants which are considered tohave healing properties.In aromatherapy these powerful oils are mixed with other oils,such as almond(杏仁)oil,or the are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air,or applied as a compress(敷药).2.Many people have aromatherapy massages(按摩),and depending on the treatment a person is having,the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3.Practitioners of aromatherapy believe that the aroma of the essential oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functions of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomia (失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4.However,while aromatherapy may have real effects that promote a sense of well-being,some traditional medicine practitioners remain doubtful about its powers.While research has confirmed that aromatherapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.Aromatherapy is a mixture oil from parts of the plants to______.A:suit different peopleB:be further exploredC:help the disabledD:be used externallyE:have healing effectsF:be promoted
共用题干Plants in DesertOnly special plants can survive the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds that drive small,sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long,hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time the water from the spring rains disappears-just a few weeks after it falls-such plants no longer need any.The perennials(多年生植物)have special features that enable them to survive as plants for several years.Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in short time. The small shoot system,on the other hand,considerably limits water ioss by evaporation(蒸发).Another feature of many perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter.This reduces their water loss by evaporation during the dry season.Then,in next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.Grasses and flowers in the desert whose life cycles are short show their ability to adapt to the quick disappearance of rainwater there after it falls in spring.A:Right B:Wrong C:Not mentioned
共用题干Plants in DesertOnly special plants can survive the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds that drive small,sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long,hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time the water from the spring rains disappears-just a few weeks after it falls-such plants no longer need any.The perennials(多年生植物)have special features that enable them to survive as plants for several years.Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in short time. The small shoot system,on the other hand,considerably limits water ioss by evaporation(蒸发).Another feature of many perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter.This reduces their water loss by evaporation during the dry season.Then,in next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.Ordinary plants are unable to survive in the desert mainly because of the changeable weather.A:Right B:Wrong C:Not mentioned
共用题干Plants in DesertOnly special plants can survive the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds that drive small,sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long,hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time the water from the spring rains disappears-just a few weeks after it falls-such plants no longer need any.The perennials(多年生植物)have special features that enable them to survive as plants for several years.Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in short time. The small shoot system,on the other hand,considerably limits water ioss by evaporation(蒸发).Another feature of many perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter.This reduces their water loss by evaporation during the dry season.Then,in next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.Desert perennials lose their leaves after the rainy season just as trees in wetter climates lose theirs because winter arrives,but the reasons for this feature are different.A:Right B:Wrong C:Not mentioned
共用题干Plants in DesertOnly special plants can survive the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds that drive small,sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long,hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.Another factor that helps these plants to survive is the fact that their life cycles are short.By the time the water from the spring rains disappears-just a few weeks after it falls-such plants no longer need any.The perennials(多年生植物)have special features that enable them to survive as plants for several years.Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in short time. The small shoot system,on the other hand,considerably limits water ioss by evaporation(蒸发).Another feature of many perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter.This reduces their water loss by evaporation during the dry season.Then,in next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.Grasses and flowers in desert are able to survive because they stay in the form of seeds to wait for the right amount of water to come.A:Right B:Wrong C:Not mentioned
共用题干“Salty” Rice Plant Boosts HarvestsBritish scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.Tim Flowers and Tony Yeo,from Sussex University's School of Biological Sciences,have spent several years researching how crops,such as rice,could be made to grow in water that has become salty.The pair have recently begun a three-year programme,funded by the Biotechnology and Biological Sciences Research Council,to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops,starting with rice.It is estimated that each year more than 10m hectares(公顷)of agricultural land are lost because salt gets into the soil and stunts(妨碍生长)plants. The problem is caused by several factors. In the tropics , mangroves(红树林)that create swamps(沼泽)and traditionally formed barriers to sea water have been cut down .In the Mediterranean,a series of droughts have caused the water table to drop,allowing sea water to seep(渗透)in. In Latin America , irrigation often causes problems when water is evaporated(蒸发)by the heat , leaving salt deposits behind.Excess salt then enters the plants and prevents them functioning normally.Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive.To overcome these problems,Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth.They have started to breed these characteristics into a new rice crop,but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use.Once the characteristics for surviving salty soil are known,Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants.Land that has been abandoned to na- ture will then be able to bloom again,providing much needed food in the poorer countries of the world. Flowers and Yeo have started a program______.A: to find ways to prevent water pollutionB: to identify genes that promote growth in salty soilC: to breed rice plants that taste saltyD: to find ways to remove excessive salt from soil
共用题干“Salty” Rice Plant Boosts HarvestsBritish scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.Tim Flowers and Tony Yeo,from Sussex University's School of Biological Sciences,have spent several years researching how crops,such as rice,could be made to grow in water that has become salty.The pair have recently begun a three-year programme,funded by the Biotechnology and Biological Sciences Research Council,to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops,starting with rice.It is estimated that each year more than 10m hectares(公顷)of agricultural land are lost because salt gets into the soil and stunts(妨碍生长)plants. The problem is caused by several factors. In the tropics , mangroves(红树林)that create swamps(沼泽)and traditionally formed barriers to sea water have been cut down .In the Mediterranean,a series of droughts have caused the water table to drop,allowing sea water to seep(渗透)in. In Latin America , irrigation often causes problems when water is evaporated(蒸发)by the heat , leaving salt deposits behind.Excess salt then enters the plants and prevents them functioning normally.Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive.To overcome these problems,Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth.They have started to breed these characteristics into a new rice crop,but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use.Once the characteristics for surviving salty soil are known,Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants.Land that has been abandoned to na- ture will then be able to bloom again,providing much needed food in the poorer countries of the world. Which of the following is NOT mentioned as a cause of the problem discussed in the passage?A: Natural barriers to sea water have been destroyed.B: The water table has gone down after droughts.C: Sea level has been continuously rising.D: Evaporation of water leaves salt behind.
共用题干“Salty” Rice Plant Boosts HarvestsBritish scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.Tim Flowers and Tony Yeo,from Sussex University's School of Biological Sciences,have spent several years researching how crops,such as rice,could be made to grow in water that has become salty.The pair have recently begun a three-year programme,funded by the Biotechnology and Biological Sciences Research Council,to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops,starting with rice.It is estimated that each year more than 10m hectares(公顷)of agricultural land are lost because salt gets into the soil and stunts(妨碍生长)plants. The problem is caused by several factors. In the tropics , mangroves(红树林)that create swamps(沼泽)and traditionally formed barriers to sea water have been cut down .In the Mediterranean,a series of droughts have caused the water table to drop,allowing sea water to seep(渗透)in. In Latin America , irrigation often causes problems when water is evaporated(蒸发)by the heat , leaving salt deposits behind.Excess salt then enters the plants and prevents them functioning normally.Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive.To overcome these problems,Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth.They have started to breed these characteristics into a new rice crop,but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use.Once the characteristics for surviving salty soil are known,Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants.Land that has been abandoned to na- ture will then be able to bloom again,providing much needed food in the poorer countries of the world. Which of the following statements about Flowers and Yeo is true?A: They are students at Sussex University.B: They are rice breeders.C: They are husband and wife.D: They are colleagues at an institution of higher learning.
共用题干Aromatherapy(芳香疗法)1 Aromatherapy is a form of alternative medicine which is based on the use of very concentrated"es-sential"oils from the flowers,leaves,bark,branches or roots of plants which are considered to have healing properties.In aromatherapy these powerful oils are mixed with other oils , such as almond(杏仁)oil, or they are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air, or applied as a compress(敷药).2 Many people have aromatherapy massages(按摩),and depending on the treatment a person is having, the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3 Practitioners of aromatherapy believe that the aroma of the"essential"oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functioning of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomnia(失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4 However,while aromatherapy may have real effects that promote a sense of well-being,some tradi- tional medicine practitioners remain doubtful about its powers.While research has confirmed that aroma-therapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.Paragraph 4______A:Doubts About the Benefits of AromatherapyB:Introduction to AromatherapyC:Personalized Aromatherapy MassageD:Different Views About AromatherapyE:Aromatherapy and Conventional Medicine F:Current Research Into Aromatherapy
共用题干Aromatherapy(芳香疗法)1 Aromatherapy is a form of alternative medicine which is based on the use of very concentrated"es-sential"oils from the flowers,leaves,bark,branches or roots of plants which are considered to have healing properties.In aromatherapy these powerful oils are mixed with other oils , such as almond(杏仁)oil, or they are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air, or applied as a compress(敷药).2 Many people have aromatherapy massages(按摩),and depending on the treatment a person is having, the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3 Practitioners of aromatherapy believe that the aroma of the"essential"oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functioning of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomnia(失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4 However,while aromatherapy may have real effects that promote a sense of well-being,some tradi- tional medicine practitioners remain doubtful about its powers.While research has confirmed that aroma-therapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.Aromatherapy is believed to______in various ways.A:have healing effectsB:be used externallyC:be promotedD:help the disabledE:be further exploredF:suit different people
共用题干Aromatherapy(芳香疗法)1 Aromatherapy is a form of alternative medicine which is based on the use of very concentrated"es-sential"oils from the flowers,leaves,bark,branches or roots of plants which are considered to have healing properties.In aromatherapy these powerful oils are mixed with other oils , such as almond(杏仁)oil, or they are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air, or applied as a compress(敷药).2 Many people have aromatherapy massages(按摩),and depending on the treatment a person is having, the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3 Practitioners of aromatherapy believe that the aroma of the"essential"oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functioning of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomnia(失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4 However,while aromatherapy may have real effects that promote a sense of well-being,some tradi- tional medicine practitioners remain doubtful about its powers.While research has confirmed that aroma-therapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.The use and benefits of aromatherapy need to______.A:have healing effectsB:be used externallyC:be promotedD:help the disabledE:be further exploredF:suit different people
共用题干Aromatherapy(芳香疗法)1 Aromatherapy is a form of alternative medicine which is based on the use of very concentrated"es-sential"oils from the flowers,leaves,bark,branches or roots of plants which are considered to have healing properties.In aromatherapy these powerful oils are mixed with other oils , such as almond(杏仁)oil, or they are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air, or applied as a compress(敷药).2 Many people have aromatherapy massages(按摩),and depending on the treatment a person is having, the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.3 Practitioners of aromatherapy believe that the aroma of the"essential"oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functioning of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomnia(失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.4 However,while aromatherapy may have real effects that promote a sense of well-being,some tradi- tional medicine practitioners remain doubtful about its powers.While research has confirmed that aroma-therapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.Aromatherapy is a mixture oil from parts of the plants to______.A:have healing effectsB:be used externallyC:be promotedD:help the disabledE:be further exploredF:suit different people
单选题During the manufacture of line,yarns are twisted together in the().Aopposite direction from which the fibers are twisted together to form strandsBsame direction the fibers are twisted to form strandsCopposite direction from which the fibers are twisted together to form the lineDopposite direction from which the fibers are twisted together forming cables
单选题The center of flotation of a vessel is().Athe center of volume of the immersed portion of the vesselBthe center of gravity of the water planeCthat point at which all the vertical downward forces of weight are considered to be concentratedDthat point at which all the vertical upward forces of buoyancy are considered to be concentrated
单选题Which of the following is NOT true for the use of tusks?ATo dig for salt.BTo remove the bark from the tree.CTo move trees and branches to clear a path.DTo pull trees and branches to establish territory.
单选题Which generalization about early hominids is most strongly supported by both passages?AThe creation of tools marks an important period in hominid development.BAncient hominids used tools to strip the bark from wood and roots.CPrimitive hominids were the only beings to construct and use tools.DHominids lived primarily in Ethiopia.EStone tools were the first type of implement devised by ancient hominids.