What effect does excessive positive ions have on some people?A．They think they are mad.B．They feel very tired.C．They become violently sick.D．They are too tired to do anything.
What effect does excessive positive ions have on some people?
A．They think they are mad.
B．They feel very tired.
C．They become violently sick.
D．They are too tired to do anything.
相关考题：
–So what should we do next ?–() A、Let’s have a cup of tea, and then discuss the plan.B、I am not clear.C、No hurry.D、I’m too busy to do anything.
You look(). What () you () ? A、tire, did…doB、tiring, have…doneC、tired, do…doD、tired, have…been doing
– Then what do you think of the opportunities? – ________ , if we come up with some new products for young people, we’ll have a bigger market share. A、According to meB、In my opinionC、Thanks.to my mind
AWeather has a great influence(影响) on people．It influences people's health, intelligence (智力) and feelings．In August, it is very hot and wet in the southern part of the United States．People there have heart disease and other kinds of health problems during this month． In the Northeast and Middle West, it is very hot at some times and very cold at other times．People in these places may have heart disease after the weather changes in February or March．The weather can also influence intelligence． For example, in a 1982 study by scientists, the in scores of a group of students were very high during a storm, but after the storm their IQ scores were lower than usual level． So storms can increase intelligence．However, very hot weather can lower it． Students in the United States often do badly on exams in the hot months of the year．Weather also has a strong influence on people's feelings．Winter may be a bad time for thin people．They usually feel cold during these months and they may feel unhappy during cold weather． In hot summer weather, on the other hand, fat people may feel unhappy． The sum- mer heat may make them tired and they are easy to get angry．( )21．lf thin people feel unhappy, the weather may be very _________．A．warmB． coldC． coolD． hot
Recent research had claimed that an excess of positive ions (离子) in the air can have an ill-effect on people's physical or psychological health. What are positive ions? Well, the air is full of ions, electrically charged particles, and generally there is a rough balance between the positive and the negative charges. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibers, or from TV sets, duplicators or computer display screens.When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea (恶心) or even mental disturbance. Animals are also found to be affected, particularly before earthquakes; snakes have been observed to come out of hibernation(冬眠), rats to flee from their burrows, dogs howl and cats jump about unaccountably. This has led the US Geographical Survey to fund a network of volunteers to watch animals in all effort to foresee such disasters before they hit vulnerable areas such as California.Conversely, when large numbers of negative ions are present, then people have a feeling of well-being. Natural conditions that produce these large amounts are near the sea, close to waterfalls or fountains, or in any place where water is sprayed, or forms a spray. This probably accounts for the beneficial effect of a holiday by the sea, or in the mountains with tumbling streams or waterfalls.To increase the supply of negative ions indoors, some scientists recommend the use of ionizers : small portable machines which generate negative ions. They claim that ionizers not only clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims and are skeptical about negative/positive ion research. Therefore people can only make up their own minds by observing the effects on themselves, or on others, of a negative rich or poor environment.After all, it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat.According to the passage, static electricity can be caused byA．using home-made electrical goods.B．wearing clothes made of natural materials.C．walking on artificial floor coverings.D．copying TV programs on a computer.
Mary: What are you working on? Susan: I'm doing some embroidery. Mary: ______ Susan: I don't do very much, just for very special occasions.A．I didn't know you did needlework.B．I think you have done a good job.C．Where did you learn to do needlework?D．Why do you do needlework?
30． Which is right according to the passage?A． People have too much time to talk with each other．B． Life now is very simple．C． Some families have become single-parent families．D． Lots of mothers stay at home and look after their children．
People sometimes don’t pay much attention to what a film is about because _______. A.they dislike itB.the crowd is too noisyC.the landscape is a mighty distractionD.the weather is very hot in the summertime
Almost everyone knows the meaning of "Mr.", "Mrs.", and "Miss&q Almost everyone knows the meaning of "Mr.", "Mrs.", and "Miss". "Mr." is used before the names of gentlemen. "Mrs." is for married women and "Miss" is for single women. But what is "Ms."?For some time, businessmen in the US have used "Ms." before a woman's name when they do not know whether or not the woman is marrieD.Today, however, many women prefer to use "Ms." rather than "Mrs." or "Miss". The word "Mr." does not tell us whether a man is married or not. Many women think this is an advantage for men. They want to be equal to men in this way. These women feel that it is not important for people to know whether or not they are marrieD.There are some problems with "Ms.", however. Not all women like it. Some like the older ways of doing things. Some find it difficult to pronounce. ("Ms." sounds like [miz].) Generally, young women like it better than older women do. It is difficult to know whether "Ms." will be used by more American women in the future or not. What do you think of this change?1. Many young women prefer to use "Ms." because ________.：A.they think themselves as good as menB.it doesn't tell whether they're married or notC.the word sounds more pleasant than "Mrs." doesD.the word has been used for a long time
According to Allen, why did the people do better with pets around when l~cing stressful tasks?A．They have lower blood pressure.B．They become more patient.C．They are less nervous.D．They are in higher spirits.
III阅读理解（20分）AThere are many different kinds of cars in the world． My uncle thinks this is because cars are like their drivers． He says: "Rich people have expensive cars，big people have large cars，and old people drive old cars． "But I don-t agree with him．My neighbor，Mrs Hill，is 82 years old． She drives only to the bank on Tuesdays． She never drives more than 30 kilometers an hour． Do you think Mrs Hill has a very old and small car? No! Her car is new．lt-s very large，and it can g0 200 kilometers an hour!My friend Mike is an artist． He draws beautiful pictures with lots of colors． But his car is black! Mrs Bates has a very，very old car．lt often has engine trouble． Does she drive that kind of car because she is poor? No，she has four factories and two million dollars in the bank． My aunt Mary has a very small car． Every Sunday，she．drives to the country with her husband，her three children，her mother and their dog．Now，you have read about some people and their cars． Do you agree with my uncle? Maybe your family have cars． Do you want to say something about them?'( )21． What does the writer-s uncle think of cars and their drivers?A． Big people drive small cars．B． Old people drive new cars．C． Poor people have expensive cars．D． Rich people have dear cars．
Do you have any idea what you would like to be and do after graduation? A lot of people don′! begin thinking about careers until they reach junior or senior year, which, in my opinion, is too late. When people are trying to decide what they want to do, it helps to know something they love. Ever since I was little, I′ve always been doing someone′s hair, make-up or nails, starting with Barbie dolls and progressing to humans. Over the years my family has really inspired me to do this and now I fix friends′ and family members′ hair for weddings, dances and other big events. I have been thinking about what I would like to do for a career since middle school. I did some research and discovered that I might really enjoy being a cosmetologist, so I went to my hair stylist and asked her lots of questions about what it takes to reach her level and what she would recommend I do. I considered her advice and then did more research. I used Aveda′ s website to get information on the Aveda Institute and what type of credit (贷款) I would need from high school to apply. I found their institute has three parts: theoretical knowledge, practical experience, and professional business-building skills. For the past few years, I have been looking at Aveda in more and more detail. This school not only offers cosmetology, but also massage therapy. I grew up in Minnesota (美国中北部的一个州), so I plan to apply to the institute in Minneapolis that several people have highly recommended. It helps students become "future industry leaders in hair care, skin care, makeup and total body wellness". It is affordable and everyone there is friendly and understanding. Having done the groundwork and thinking about what I′d like to do after high school, I know that I will definitely pursue my dream of becoming a cosmetologist. Why does the author think it′s too late for people to start thinking about careers in junior or senior year?A.Because he/she began to think about them when very young.B.Because many people are too old to learn.C.Because a lot of people can't grasp the opportunity.D.Because many people have little they love.
As recently as three decades ago,many Americans believed that using credit was an unwise and?dangerous way to pay for what they bought．Some even thought that owing money to a store or a?credit company was something to be ashamed of．Good citizens,they believed,always bought what?they wanted with real money and they paid the full price immediately．Today,however,all that has changed．Credit,as some observers have noted,has become a?way of life in the United States．More and more Americans now are depending on those small pieces?of plastic,credit cards,to pay for large purchases such as televisions,record players or furniture．Many people today would consider it unusual not to use a credit card to pay for a costly restaurant?dinner,a hotel room or an airline trip．And there are some situations in which Americans must have?credit cards．If they want the temporary use of a car,for example,they first must give the car rental?company the number of their credit card．That number is considered a guarantee that they will return?the car and pay for using it．Credit cards offer two major services to Americans．First of all,they are easier and safer to?carry than large amounts of money．Second,they permit people to borrow,to have the immediate?pleasure of owning something,even if they do not have enough money to pay for it at the time．With?credit cards people pay for goods or services at the end of each month instead of when they buy them．And when the time does come to pay,most credit cards offer people a choice．They can pay all of?what they owe for the month or they can just pay usually between 5 and 10 percent of what they owe．What do Americans feel about using credit cards nowadays according to the?passage?A.They consider it valuable．B.They regard it as a shame．C.They think it dangerous．D.They find it quite convenient．
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.People who suffer from astigmatism have______.A.a difficulty that can be corrected by an operationB.eyes that are not exactly the right shapeC.an eye difficulty that cannot be corrected by glassesD.one eye bigger than the other
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.Having two eyes instead of one is particularly useful for______.A.looking over a wide areaB.seeing objects far awayC.judging distancesD.seeing at night
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.The underlined word suffer in the third paragraph probably means______.A.feel painB.imagineC.are affected withD.experience
根据以下材料，回答题Do you have any idea what you would liketo be and do after graduation A lot of people don′t begin thinking aboutcareers until they reach junior or senior year, which, in my opinion, is toolate.When people are trying to decide what theywant to do, it helps to know something they love.Ever since I was little, I′ve always beendoing someone′s hair, make-up or nails, starting with Barbie dolls andprogressing to humans. Over the years my family has really inspired me to dothis and now I fix friends′ and family members′ hair for weddings, dances andother big events.I have been thinking about what 1 would liketo do for a career since middle school. I did some research and discovered thatI might really enjoy being a cosmetologist, so I went to my hair stylist andasked her lots of questions about what it takes to reach her level and what shewould recommendI do. I considered her advice and then didmore research.I used Aveda′s website to get information onthe Aveda Institute and what type of credit (贷款) I would need from high school to apply. Ifound their institute has three parts: theoretical knowledge, practicalexperience, and professional business-building skills. For the past few years,I have been looking at Aveda in more and more detail. This school not onlyoffers cosmetology, but also massagetherapy. I grew up in Minnesota (美国中北部的一个州 ), so I planto apply to the institute in Minneapolis that several people have highlyrecommended. It helps students become "future industry leaders in haircare, skin care, makeup and total body wellness". It is affordable and everyonethere is friendly and understanding.Having done the groundwork and thinkingabout what I′d like to do after high school, I know that I will definitelypursue my dream of becoming a cosmetologist. Why does the author think it′s too latefor people to start thinking about careers in junior or senior year 查看材料A.Because he/she began to think about themwhen very young.B.Because many people are too old to learn.C.Because a lot of people can't grasp theopportunity.D.Because many people have little theylove.
Life gets noisier every day and very few people can free from noise of some sort or another.It doesn′t matter where you live--in the middle of a modem city,or a faraway village--the chances that you will be disturbed by jet aero planes,transistor radios,oil powered engines,etc.,are almost everywhere.We seem to be getting used to noise,too.Some people feel quite lonely without background music while they are working.Scientific tests have shown that total silence can be very frightening experience for human beings.However,some people enjoy listening to pop music which is very loud,and this can do harm to their eardrums（耳鼓）.The noise level in some disco is far above the usual safety level for heavy industrial areas.One recent report about noise and concentration（专心）suggested that although a lot of people say that any noise disturbs their concentration,what really affects their ability to concentrate is a change in the level of noise.It goes on to say that a background noise,which doesn′t change too much（music,for example）may even help people to concentrate."Background music"in the passage meansA.music played in the concertB.a kind of noise coming into your earsC.music which helps people to concentrateD.music played while people are working
Life gets noisier every day and very few people can free from noise of some sort or another.It doesn′t matter where you live--in the middle of a modem city,or a faraway village--the chances that you will be disturbed by jet aero planes,transistor radios,oil powered engines,etc.,are almost everywhere.We seem to be getting used to noise,too.Some people feel quite lonely without background music while they are working.Scientific tests have shown that total silence can be very frightening experience for human beings.However,some people enjoy listening to pop music which is very loud,and this can do harm to their eardrums（耳鼓）.The noise level in some disco is far above the usual safety level for heavy industrial areas.One recent report about noise and concentration（专心）suggested that although a lot of people say that any noise disturbs their concentration,what really affects their ability to concentrate is a change in the level of noise.It goes on to say that a background noise,which doesn′t change too much（music,for example）may even help people to concentrate.From this passage,the pollution of noiseA.doesn't matter muchB.has become worse everywhereC.has become better in big citiesD.has become better in villages
Life gets noisier every day and very few people can free from noise of some sort or another.It doesn′t matter where you live--in the middle of a modem city,or a faraway village--the chances that you will be disturbed by jet aero planes,transistor radios,oil powered engines,etc.,are almost everywhere.We seem to be getting used to noise,too.Some people feel quite lonely without background music while they are working.Scientific tests have shown that total silence can be very frightening experience for human beings.However,some people enjoy listening to pop music which is very loud,and this can do harm to their eardrums（耳鼓）.The noise level in some disco is far above the usual safety level for heavy industrial areas.One recent report about noise and concentration（专心）suggested that although a lot of people say that any noise disturbs their concentration,what really affects their ability to concentrate is a change in the level of noise.It goes on to say that a background noise,which doesn′t change too much（music,for example）may even help people to concentrate.Some people may have their hearing hurtA.while they are in complete silenceB.while they are dancing violentlyC.while they are listening to pop musicD.while they are listening to soft music
Life gets noisier every day and very few people can free from noise of some sort or another.It doesn′t matter where you live--in the middle of a modem city,or a faraway village--the chances that you will be disturbed by jet aero planes,transistor radios,oil powered engines,etc.,are almost everywhere.We seem to be getting used to noise,too.Some people feel quite lonely without background music while they are working.Scientific tests have shown that total silence can be very frightening experience for human beings.However,some people enjoy listening to pop music which is very loud,and this can do harm to their eardrums（耳鼓）.The noise level in some disco is far above the usual safety level for heavy industrial areas.One recent report about noise and concentration（专心）suggested that although a lot of people say that any noise disturbs their concentration,what really affects their ability to concentrate is a change in the level of noise.It goes on to say that a background noise,which doesn′t change too much（music,for example）may even help people to concentrate.Scientists have discovered that what prevents people from concentrating isA.any kind of noiseB.great changes in level of noiseC.background,noiseD.various background music
问答题Practice 8 You should spend about 40 minutes on this task. Write about the following topic: Some people think people have benefited from modern communications technology, but other people think some people have not benefited at all. To what extent do you agree or disagree? You should write at least 250 words.
问答题Now Internet has almost become the symbol of information age. Some think that it is a very great invention because by it, they can do many things that were impossible before. But some view Internet with much disapproval because it distracts people's attention rather than help people do things better. What is your opinion about the influence of Internet on the modern society? Write an essay of about 400 words on the following topic:Internet and the Modern SocietyIn the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement, with appropriate details. In the last part you should bring what you have .written to a natural conclusion or a summary. Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
问答题◆Topic 8: Is education Losing its Value? Questions for reference: 1. Some people think that this increased access to education is devaluing degrees. What’s your point of view? 2. What can the degrees bring to people? 3. Do you think it’s necessary to have increased emphasis on degrees in our society? Why?
单选题According to the passage, people have difficulty getting to sleep because ______.Athey work more than sixty hours a weekBthey have too many enemiesCthey do not sleep happilyDthey are not tired enough
问答题◆Topic 7：TV—the Pandora’s Box to Children? Questions for Reference: 1) Some people think children’s spending time on TV and video is good, while others think it is bad. Discuss both views. 2) Give your own opinion about this issue. 3) What can we do to ensure the TV and video make a positive effect on our children?
问答题◆Topic 3: Will petty criminals get light punishment? Questions for Reference: 1. A new prosecution guideline was recently released: people convicted of petty crimes may get light punishment if they are minors, the elderly people, and people who have slightly breached the law because of poverty. What do you think of this new law? 2. This new law is said to be a humane practice and it will help them put their lives back in order and better serve their families. Do you think it can achieve its end? 3. Some people think that if petty crimes are not punished in a timely way, more serious consequences will follow. What do you think of this argument?