单选题Humans, like many other animals, are warm-blooded with a fairly constantly body temperature.AHumansBlikeCwithDfairly constantly
单选题
Humans, like many other animals, are warm-blooded with a fairly constantly body temperature.
A
Humans
B
like
C
with
D
fairly constantly
参考解析
解析：
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阅读下面短文,根据短文内容,在短文后81－85小题中句子空白处填入适当的词语或句子。We know that m 阅读下面短文，根据短文内容，在短文后８１－８５小题中句子空白处填入适当的词语或句子。We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another place at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration is probably the migration of fish, which is called “salmon”（鲑鱼）. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.Recently, scientists have studied the migration of a kind of lobster(龙虾). Every year, when the season of the bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where the go. So, sometimes we know why humans and animals move from one place to another place, but at other times we don’t. Maybe living things just like to travel.81. The reason for most of the animals to move is _____________________.
The statement “it is all too monkey” (Last line, paragraph l) implies that ________.[A] monkeys are also outraged by slack rivals[B] resenting unfairness is also monkeys’ nature[C] monkeys, like humans, tend to be jealous of each other[D] no animals other than monkeys can develop such emotions
AThe undersea world is very beautiful． Now more and more people want to dive in the water to find the secrets there． Scuba diving is a new sport today． It can take you into a wonder-ful undersea world．You will find many strange animals in the sea． Some are as large as a school bus． Many sea animals give out light in the dark and some have sharp teeth．During the day， there is enough light． Here， under the sea， everything is blue and green．When fish swim nearby， you can catch them with your hands． When you have bottles of air on your back， you can stay in deep water for a long time． However， you can-t dive too deep． And you must be very careful when you dive in deep water．The deep sea is not an easy place to live in． It-s cold， and it，s dark， too． The deeper it is， the less sunlight there is． At about 3，000 feet， there is no light at all． It is very dark in the sea． Many fishes have no eyes． Some have big eyes． A few have eyes on one side． Besides the cold and the darkness， deep-sea animals face a third danger-other animals．Animals eat! They must find food to eat． Many animals eat plants． However， some am-mals eat meat． This means these sea animals have two big jobs． They need to find animals as food， and they have to try not to become other animals' meal．( )21． Why do people want to dive in the sea? Because ________ ．A．they want to catch fishB． they want to find the secrets of the undersea worldC． the sea is deepD， there are all kinds of plants in the sea
Which of the following is NOT TRUE in the passage?A. The two-way radio is like a telephone for Australian farmers.B. Families on large farms could keep in touch with each other by radios.C. The two-way radio is like a newspaper for Australian farmers.D. All the Australians live on dry places, and they use radios in many ways.
Some warm-blooded animals ______ hibernate.A. need notB. does not needC. not needD. do not need
Passage TwoQuestions 26 to 30 are based on the following passage.Certain animals and plants develop characteristics(特性)that help them cope with their environment better than others of their kind. This natural biological process is called adaptation(适应性). Among the superior characteristics developed through adaptation are those that may help in getting food or shelter，in providing protection，and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments.Each living thing is adapted to its way of life in a general way，but each is adapted especially to its own distinct class. A plant，for example，depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals. It depends upon its green leaves for using the sun's energy to make food from inorganic chemicals. These are general adaptations，common to most plants. In addition，there are special adaptations that only certain kinds of plants have. Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape，and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near.Organisms have a great variety of ways for adapting. They may adapt in their structure，function，and genetics(遗传素质)；in their development and production of the young；and in other respects. An organism may create its own environment，as do warm-blooded mammals. which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage，but sometimes an organism is so well adapted to a particular environment that，if conditions Change，it finds it difficult or impossible to readapt to the new conditions.Some plants and animals develop superior characteristics so that they may______.A. help others of their kind get food，shelter and other things neededB. get into the biological process of adaptationC. become better adapted to the environments than others of their kindD. lead to the evolution and production of more and more organisms
What can be inferred from Paragraph 3?A.Body language is uniqun to humans.B.Animals express emotions just as humans do.C.Humans have other poeers of communication.D.Humans are thfferent from animals to some degree.
This pastge is mainly about ______ .A.the development of body languageB.the special role humans play in natureC.the power to convey information to othersD.the difference between humans and animals in language use
Animals other than humans have not developed communications comparable to human language. But is it possible that other animals have the capacity to learn a language if they are adequately taught? Obviously, this is a fascination notion. The idea of communicating directly with another species has long been a part of human folklore and children’s fantasies. But on a scientific level, the question of whether animals can learn a language is important primarily because it relates to the controversy()between the cognitive and the learning approaches to language. If language is dependent on and is actually an outgrowth of the intellectual structure of the human mind, there is the strong supposition that only humans are capable of using language. Therefore, Noam Chomsky and other psycholinguists have argued that only humans can learn a language, while most behaviorists feel that with sufficient patience it should be possible to teach an animal some sort of language. Although the two schools of thought clearly differ on this point, it is not really a crucial test of the two theories. If a chimpanzee can master a simple language all it would mean is that the chimp’s intellectual capacity and brain structure are more similar to ours than we thought. It would not necessarily imply that our intellectual structure is unimportant in our own mastery of language. Thus, teaching an animal language is an impressive demonstration of the power of learning techniques, but it is not evidence that language is developed entirely through learning.On the other hand, the question of whether other animals can learn a language is fascination in its own right, aside from its value as a test of the two theories of language development. Accordingly, whatever one’s position on the theoretical dispute, we must consider training an animal to use language a dramatic accomplishment.36.Which of the following statements is the view of psycholinguists?A. The cognitive view of language learning says that only human beings can learn language because it is an outgrowth of the structure of the human mind.B. Other animals simply could master a language.C. The animals intellectual capacity is much better than human beings.D. Language is developed by learning.37.The behaviorists’ view is that __________.A. language is actually an outgrowth of intellectual structure of the animal’s mindB. animals have not developed communications systemC. given enough patience, a man should be able to teach an animal some sort of languageD. only human beings can learn language38.That an animal can master a simple language means that __________.A. human’s intellectual structure is not importantB. animals’ intellectual capacity and brain structure are more similar to the humans’C. the learning techniques are much more importantD. language is developed completely by learning39.The main idea of paragraph two is ___________.A. teaching a chimp language is not crucial test of the two theoriesB. their brain structure is not similar to humanC. using various methods to let the chimp master a languageD. training a nonhuman to use language is an amazing accomplishment40.The best title for this passage would be _________.A. Animals’ languageB. Human’s languageC. Teaching Animals’ LanguageD. Can Other Animals Acquire Language?
Part CDirections: Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written clearly on ANSWER SHEET II. ( 10 points)Do animals have rights.'? This is how the question is usually put. It sounds like a useful, ground clearing way to start. 46) Actually, it isn't, because it assumes that there is an agreed account of human rights, which is something the world does not have.On one view of rights, to be sure, it necessarily follows that animals have none. 47) Some philosophers argue that rights exist only within a social contract, as part of an exchange of duties and entitlements. Therefore, animals cannot have rights. The idea of punishing a tiger that kills somebody is absurd, for exactly the same reason, so is the idea that tigers have rights. However, this is only one account, and by no means an uncontested one. It denies rights not only to animals but also to some people—4or instance to infants, the mentally incapable and future generations.In addition, it is unclear what force a contract can have for people who never consented to it, how do you reply to somebody who says "I don' t like this contract" ?The point is this: without agreement on the rights of people, arguing about the rights of animals is fruitless. 48 ) It leads the discussion to extremes at the outset: it invites you to think that animals should be treated either with the consider- ation humans extend to other humans, or with no consideration at all. This is a false choice. Better to start with another, more fundamental, question: is the way we treat animals a moral issue at all?Many deny it. 49) Arguing from the view that humans are different from animals in every relevant respect, extremists of this kind think that animals lie outside the area of moral choice.Any regard for the suffering of animals is seen as a mistake—a sentimental displacement of feeling that should properly be directed to other humans.This view which holds that torturing a monkey is morally equivalent to chopping wood, may seem bravely "logical". In fact it is simply shallow: the confused center is right to reject it. The most elementary form. of moral reasoning—the ethical equivalent of learning to crawl—is to weigh others' interests against one's own. This in turn requires sympathy and imagination: without there is no capacity for moral thought. To see an animal in pain is enough, for most, to engage sympathy. 50)When that happens, it is not a mistake: it is mankind' s instinct for moral reasoning in action, an instinct that should be encouraged rather than laughed at.46.____________________
共用题干第二篇Archive Gallery : The Best of Bionics（仿生学）Humans might be the most highly-evolved species on the planet,but most animals possess skills we can only dream of having. Imagine how much electricity we could save if we could see in the dark the way catsdo. Imagine leaping from tree to tree like a monkey. Giraffes（长颈鹿）,which are otherwise calm and good- natured,sleep only 4.6 hours a day.We realized a long , long time ago that nature provides the best blueprint（蓝图）for invention. We ' ve borrowed canals from beavers（河狸）and reflectors from cat's eyes. Although the words"bionics"became popular only after the l960s,history shows that nature has always provided ideas on solving everyday prob- lems. Our archives（档案）don't go back to the time of Leonardo da Vinci and his bird-like flying machines,but we can take you to the late 19th century,where we applied those same principles for building our first practical airplanes.To prepare for their flight at Kitty Hawk,the Wright brothers studied the movements of pigeons to fingureout how they stayed high up when they were heavier than air. Their success inspired scores of successors to improve on the airplane by studying various aspects of nature.One of Orville Wright's pupils caught and stuffed seagulls to examine their wingspan.Meanwhile,two French inventors examined spinning sycamore（美 国梧桐）seeds in an effort to apply those same motions , reversed , to a helicopter.Some examples are more obvious than others.The outside of the airplane designed by the WrightDrotliers looks like a minimalistic（简单抽象艺术）structure. On the other hand , Barney Connett ' s fish iubmarine（潜水艇）actually looks like a fish.Some bio-inspired concepts have yet to be invented.In the l960s,the US Army commissioned several iniversity professors to conduct research on the motor skills of animals in hope of applying those same abili- ies to tanks. Tanks that run like horses or jump like grasshoppers（蚂炸）一sounds shocking,doesn't it? 3ut imagine how life would change if we could achieve that."Cats","monkeys"and"giraffes"mentioned in Paragraph 1 are examples to illustrate____________.A:they are highly-evolved species as humansB:humans can learn animals' skillsC:they are skillful in different waysD:animals have skills that humans do not possess
共用题干Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where living creatures expand within a given area. You can say that an ecosystem is the natural environment where biological organisms（生物）such as plants,animals and humans co-exist in this world. So naturally that includes you and me. Yes,we are all members of an ecosystem!2 .There are different kinds of ecosystems depending on the type of surface or environ-ment. Most are naturally made such as the ocean or lake and the desert or rainforest.Some are man-made or artificial to encourage co-habitation（同居）between living and non-living things in a monitored environment,such as a zoo or garden.3 .Plants make up the biggest group of biological creatures within an ecosystem,and that's because they are the natural food producers for everyone. Plants raised in the earth need air and collect sunlight to help them grow. When they grow,the plants and its fruits or flowers eventually become a source of food to animals,microorganisms（微生物）and even hu- mans,of course. Food is then converted to energy for the rest of us to function,and this hap-pens in a never-ending cycle until the living creatures die and break up back in the earth.4 .Ecosystems are the basis of survival for all living things.We depend on plants and ani-mals for food. In order for us to exist,we need to grow and care about other organisms. We also need to care for the non-living things within our environment like our air and water so we can continue living as a population. Since plants,animals and humans are all of various species（物种）,we all play a role in maintaining the ecosystem.5 .To preserve our ecosystems,we should stop using too much energy,which happens when we consume more than our share of resources. Humans should not disturb the natural habitat（栖息地）of plants and animals,and allow them to grow healthily for the cycle to con-tinue. Too many people in a habitat can mean displacement（搬迁）: imagine being thrown out of your home because there is no more space for everyone. Worse,overpopulation can also ru- in the environment and cause destruction of existing plants and animals.Plants,animals and humans are all effective in______.A: our share of resourcesB: a biological creatureC: a given areaD: the maintenance of the ecosystemE: the source of foodF: various species
共用题干Adaptation of Living ThingsCertain animals and plants develop characteristics that help them cope with their environment better than others of their kind.This natural biological process is called adaptation.Among the superior characteristics developed through adaptationare those that may help in getting food or shelter,in providing protection,and in producing and protecting the young.That results in the evolution of more and more organisms（微生物）that are better fitted to their environments.Each living thing is adapted to its way of life in a general way,but each is adapted especially to its own distinct class.A plant,for example,depends upon its roots to fix itself firmly and to absorb water and inorganic（无机的）chemicals.It depends upon its green leaves for using the sun's energy to make food from inorganic chemicals.These are general adaptations,common to most plants.In addition,there are special adaptations that only certain kinds of plants have.Many animals have adaptations that help them escape from their enemies.Some insects are hidden by their body color or shape,and many look like a leaf or a little branch.The coats of deer are colored to mix with the surroundings.Many animals have the ability to remain completely still when an enemy is near.Organisms have a great variety of ways of adapting.They may adapt.in their structure,function,and genetics;in their development and production of the young;and in other respects.An organism may create its own environment,as do warm-blooded mammals（哺乳动物）,which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather.Usually adaptations are an advantage,but sometimes an organism is so well adapted to a particular environment that,if conditions change,it finds it difficult or impossible to readapt to the new conditions.The author cites the behavior of warm-blooded mammals in order to illustrate that______.A:a living thing may have the ability to create an environment of its ownB:a living creature may have the ability to remain still when an enemy is nearC:a living creature may have the ability to make food from its inorganic chemicalsD:a living creature may have the ability to change the color of its skin
共用题干Adaptation of Living ThingsCertain animals and plants develop characteristics that help them cope with their environment better than others of their kind.This natural biological process is called adaptation.Among the superior characteristics developed through adaptation are those that may help in getting food or shelter,in providing protection,and in producing and protecting the young. That results in the evolution of more and more organisms（生物体）that are better fitted to their environments.Each living thing is adapted to its way of life in a general way,but each is adapted especially to its own distinct class.A plant,for example,depends upon its roots to fix itself firmly and toabsorb water and inorganic chemicals（无机物）.It depends upon its green leaves for using the sun's energy to make food from inorganic chemicals.These are general adaptations,common to most plants .In addition,there are special adaptations that only certain kinds of plants have.Many animals have adaptations that help them escape from their enemies.Some are hidden by their body color or shape,and many look like a leaf or a little branch.The coats of deer are colored to mix with the surroundings .Many animals .have the ability to remain completely still when an enemy is near.Organisms have a great variety of ways of adapting.They may adapt in their structure,func-tion,and genetics;in their development and production of the young;and in other respects.An organism may create its own environment, as do warm-blooded mammals（哺乳动物）,which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather.Usually adaptations are an advantage,but sometimes an organism is so well adapted to a particular environment that if conditions change,it finds it difficult or impossible to readapt to the new conditions. The author cites the behavior of warm-blooded mammals in order to illustrate that a living thing may have the ability_______.A:to create an environment of its ownB:to remain still when an enemy is near.C:to make food from its inorganic chemicalsD:to change the color of its skin.
共用题干第一篇How Animals Keep WarmMan has invented ways to keep warm,but how do animals defend themselves?They cannot reason in the sense that man can,but nature has taken care of the animal kingdom by providing animals with special instincts（本能）.One of these instincts is known as hibernation（冬眠）." Sleeping like a dormouse（棒睡鼠）"is not only a common saying but is a reality. When winter comes,the dormouse and other hibernating animals have reached a well-nourished state.They eat very well in warmer days laying down fat in the tissues of their bodies and during hibernation this keeps them alive.Safe in their nests,or burrows（地洞）,they sleep soundly until the warmth of spring arrives.Bats,tortoises,snakes,frogs,even insects like butterflies,hibernate more or less completely. Some, like the squirrels（松鼠）,sleep during coldest weather but are roused（弄醒）by a warm spell（暖流）.During hibernation, the temperature of an animal's body drops drastically.Breathing and heart-beats almost cease.Another instinctive method of avoiding intense cold is to escape by means of migration. Wild swans,seagulls,swallows and cuckoos are a few of the very many kinds of birds which fly thousands of miles,twice a year,to avoid cold.Many animals,especially those of the Arctic regions,have summer and winter quarters.The Arctic deer of North America, as well as the reindeer（驯鹿）of Europe,move southward towards the forests when winter approaches.They return to the northern area when the warmth of spring begins to be sensed.There are animals which do not attempt to leave at the first sign of winter cold.Their instinctive means of defense is to dig out a deep burrow,made it soft and warm by padding （填塞）out with straw,leaves,moss and fur. In it they have a"secret place"containing food which they hope will last the winter through!Animals which fall into this class include the Arctic fox,the rabbit and the little field-mouse."Sleeping like a dormouse"most probably meansA:sleeping longer on cold days.B:sleeping badly.C:sleeping with a lower heartbeat rate.D:sleeping with little breathing,
共用题干第一篇How Animals Keep WarmMan has invented ways to keep warm,but how do animals defend themselves?They cannot reason in the sense that man can,but nature has taken care of the animal kingdom by providing animals with special instincts（本能）.One of these instincts is known as hibernation（冬眠）." Sleeping like a dormouse（棒睡鼠）"is not only a common saying but is a reality. When winter comes,the dormouse and other hibernating animals have reached a well-nourished state.They eat very well in warmer days laying down fat in the tissues of their bodies and during hibernation this keeps them alive.Safe in their nests,or burrows（地洞）,they sleep soundly until the warmth of spring arrives.Bats,tortoises,snakes,frogs,even insects like butterflies,hibernate more or less completely. Some, like the squirrels（松鼠）,sleep during coldest weather but are roused（弄醒）by a warm spell（暖流）.During hibernation, the temperature of an animal's body drops drastically.Breathing and heart-beats almost cease.Another instinctive method of avoiding intense cold is to escape by means of migration. Wild swans,seagulls,swallows and cuckoos are a few of the very many kinds of birds which fly thousands of miles,twice a year,to avoid cold.Many animals,especially those of the Arctic regions,have summer and winter quarters.The Arctic deer of North America, as well as the reindeer（驯鹿）of Europe,move southward towards the forests when winter approaches.They return to the northern area when the warmth of spring begins to be sensed.There are animals which do not attempt to leave at the first sign of winter cold.Their instinctive means of defense is to dig out a deep burrow,made it soft and warm by padding （填塞）out with straw,leaves,moss and fur. In it they have a"secret place"containing food which they hope will last the winter through!Animals which fall into this class include the Arctic fox,the rabbit and the little field-mouse.During hibernation,animals breatheA:normally. B:at a slower rate.C:at a faster rate. D:irregularly.
共用题干Ecosystem1 The word " ecosystem" is short for ecological（生态的）system. An ecosystem is where living crea- tures expand within a given area.You can say that an ecosystem is the natural environment where biologicalorganisms（生物）such as plants,animals and humans co-exist in this world. So naturally that includes you and mne.Yes,we are all members of an ecosystem!2 There are different kinds of ecosystems depending on the type of suiface or environment. Most are naturally made 5uch as the ocean or lake and the desert or rainforest.Some are man-made or artificial to en- courage co-habitation（共居）between living and non-living things in a monitored environment,such as azoo or garden.3 Plants make up the biggest group of biological creatures within an ecosystem,and that's because they are the natural food producers for everyone.Plants raised in the earth need air and collect sunlight to help them grow.When they grow,the plants and their加its or flowers eventually become a source of food to animals,microorganisms (微生物）and even humans, of course. Food is then converted to energy for the rest of us to function,and this happens in a never-ending cycle until the living creatures die and break up back in the earth.4 Ecosystems are the basis of survival for all living things.We depend on plants and animals for food. In order for us to exist,we need to grow and care about other organisms.We also need tO care for the non一living things within our environment like our air and water so we can continue living as a population.Since plants, animals and humans are all of various species（物种）,we all play a role in maintaining the ecosystem.5 To preserve our ecosystems,we should stop using too much energy,which happens汕en we consume more than our share of resources. Humans should not disturb the natural habitat（栖息地）of plants and animals, and should allow them to grow healthily for the cycle to continue.Too many people in a habitat can mean dis- placement（搬迁）:imagine being thrown out of your home because there is no more space for everyone. Worse,overpopulation can also ruin the environment and cause destruction of existing plants and animals.In an ecosystem,plants,animals and humans live together in________.A:our share of resoureesB:a biological creatureC:a given areaD:the maintenance of the ecosystemE:the source of foodF:various species
共用题干Ecosystem1 The word " ecosystem" is short for ecological（生态的）system. An ecosystem is where living crea- tures expand within a given area.You can say that an ecosystem is the natural environment where biologicalorganisms（生物）such as plants,animals and humans co-exist in this world. So naturally that includes you and mne.Yes,we are all members of an ecosystem!2 There are different kinds of ecosystems depending on the type of suiface or environment. Most are naturally made 5uch as the ocean or lake and the desert or rainforest.Some are man-made or artificial to en- courage co-habitation（共居）between living and non-living things in a monitored environment,such as azoo or garden.3 Plants make up the biggest group of biological creatures within an ecosystem,and that's because they are the natural food producers for everyone.Plants raised in the earth need air and collect sunlight to help them grow.When they grow,the plants and their加its or flowers eventually become a source of food to animals,microorganisms (微生物）and even humans, of course. Food is then converted to energy for the rest of us to function,and this happens in a never-ending cycle until the living creatures die and break up back in the earth.4 Ecosystems are the basis of survival for all living things.We depend on plants and animals for food. In order for us to exist,we need to grow and care about other organisms.We also need tO care for the non一living things within our environment like our air and water so we can continue living as a population.Since plants, animals and humans are all of various species（物种）,we all play a role in maintaining the ecosystem.5 To preserve our ecosystems,we should stop using too much energy,which happens汕en we consume more than our share of resources. Humans should not disturb the natural habitat（栖息地）of plants and animals, and should allow them to grow healthily for the cycle to continue.Too many people in a habitat can mean dis- placement（搬迁）:imagine being thrown out of your home because there is no more space for everyone. Worse,overpopulation can also ruin the environment and cause destruction of existing plants and animals.Plants are essential in an ecosystem because to other living creatures they are___.A:our share of resoureesB:a biological creatureC:a given areaD:the maintenance of the ecosystemE:the source of foodF:various species
问答题The point is this: without agreement on the rights of people, arguing about the rights of animals is fruitless. It leads the discussion to extremes at the outset: it invites you to think that animals should be treated either with the consideration humans extend to other humans, or with no consideration at all. This is a false choice. Arguing from the view that humans are different from animals in every relevant respect, extremists of this kind think that animals lie outside the area of moral choice. Any regard for the suffering of animals is seen as a mistake—a sentimental displacement of feeling that should properly be directed to other her humans. But the most elementary form of moral reasoning is to weigh others’ interests against one’s own. To see an animal in pain is enough, for most, to engage sympathy. When that happens, it is not a mistake, it is mankind’s instinct for moral reasoning in action, an instinct that should be encouraged rather than laughed at.
单选题Which of the following statements is NOT made in the passage?AHuman beings are rhythmical physiologically and emotionally.BRhythm is what differentiates humans from other animals.CHuman beings seem to be born with a love for rhythm.
单选题Which of the following statements is true?ADeveloping fever is the privilege of warm-blooded animals, so sick lizards cannot run a fever.BInvertebrates also have the ability to raise their temperature.CThe internal temperatures of warm-blooded creatures are independent of the weather, so are the cold-blooded animals.DSick lizards move into the sun to develop fever.
单选题The breakup of the habitats resulted in the following except __________.Aa lack of food for tamarins to live onBpotential threats to tamarins coming nearbyCtamarins’ hardly coming down trees to avoid predatorsDa good fortune for many other threatened animals
单选题Which of the following is NOT mentioned as the result of artificial selection by humanity?AMany new kinds of plants and animals are produced.BFinancial gain is increased considerably by producing better plants and animals.CHumans are able to control plant and animal reproduction for humans’ pleasure.DIt is necessary for humans to maintain the artificial environments.
问答题Animal rights are a controversial topic right now. Actually, the debate is focused mainly on animal testing. The following are opinions from both sides. Read the excerpts carefully and write your response in about 300 words, in which you should: 1. summarize briefly the opinions from both sides, and then 2. give your comment. Marks will be awarded for content relevance, content sufficiency, organization and language quality. Failure to follow the above instructions may result in a loss of marks. Animals are used for research in a variety of settings, including tests to determine the safety of drugs, cosmetics and other substances. Whether or not humans should use animals for testing purposes, however, is a controversial subject. Dr. Bob Miller, a medical researcher from Michigan State University, states that one of the primary advantages of animal testing is that it allows researchers to develop new medications and treatments, advancing the field of medicine and enhancing the health of society. For instance, many drugs used to treat or prevent cancer, HIV, diabetes, infections and other medical maladies have resulted from tests performed on animals. Moreover, animal testing enables scientists and researchers to test the safety of medications and other substances with which humans have regular contact. Drugs, for instance, may pose significant risks to humans, so testing them on animals fast gives researchers a chance to determine drugs’ safety before human trials are performed. While scientists are cognizant of the differences between humans and animals, the similarities are considered significant enough to produce relevant, useful data that they can then apply to humans. Thus, animal testing reduces harm to humans and saves lives. However, Prof. Abhay Shina, a leading critic of animal testing, points out that the major disadvantage to animal testing is that a significant number of animals are harmed or die as a result of experiments and testing. Unfortunately, many of the substances used on animal subjects never receive approval for human use or consumption. Humans receive no direct benefits as a result of the deaths of these animals. He also argues that animals are dissimilar enough from humans to make the results of animal tests unreliable. A related criticism is that testing induces stress in the animals, meaning that the subjects do not react to experimental substances in the same way that they might in more natural circumstances, making the results of experiments less valid. Using animals as research subjects is also expensive, because the animals require food, shelter, care and treatment in addition to the costs of experimental substances. Long-term or multi-phase tests can increase the costs of the practice as well. The actual price paid for the animals is also worth consideration; there are companies that breed and sell animals specifically for testing purposes.