1、Section III 科學小品篇Passage 23Researchers (研究者) have announced (宣布) the result of two studies on the health effects of the drug aspirin (阿斯匹林). One study shows aspirin can sharply reduce the chance that a healthy, older man will suffer from a heart attack (心臟病).The study offered two new results from ea

2、rlier findings. It said taking one aspirin pill every other day helped only healthy men over the age of fifty. It also said aspirin gave the greatest protection against heart attacks to men with low blood cholesterol (膽固醇) levels.Earlier in the United States began a major aspirin study in the early

3、1980s. It included 22,000 healthy men doctors. All were between the ages of forty and eighty-four. More than 11,000 of the doctors took a harmless pill that contained no drug. The men did not know which kind of pill they were taking.The doctors who took aspirin suffered 44% fewer heart attacks than

4、those taking the harmless pill. 139 men who took aspirin suffered from heart attacks. Ten of them died. 239 men who did not take aspirin suffered from heart attacks. Twenty-six of them died.The researchers said the doctors study provides clear proof that taking aspirin can prevent a first heart atta

5、ck in healthy, older men. They said, however, the result does not mean every man over the age of fifty should take aspirin. They said aspirin couldnt help men who do not eat healthy foods, who smoke cigarettes and who are fat. The researchers said men who think they would be helped by taking aspirin

6、 should talk with their doctors first.1.The passage tells us that the new use of aspirin is _.A.to treat heart disease B. to reduce pain while one suffers from a heart attackC. to help old people to be more healthy D. to reduce the chance of a heart attack in old men2.Aspirin can help those who _.A

7、work as doctors B. are under 40 years oldC. are fat and smoke cigarettes D. are older and healthy3.At last the researchers advised us to take aspirin _.A.with care B. as much as we like C. every day D. only considering the age4.From the experiment we can conclude that about _ of people who suffered

8、from heart attacks without aspirin died.A. 7% B. 11% C. 19% D. 44%Passage 24It seems to be strange to you there is a blind spot (盲點)on the eyes. Here is an interesting experiment (實驗) that can make something disappear, when one eye is open.Make a card about the size of a postcard and write two Engli

9、sh letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, youll find the letter L disappearing. But if y

10、ou move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, youll find the letter R disappearing.Why does the letter disappear? It is because there is a blind spot on the eye. When the image (影像) of the letter falls on the blind spot, it

11、 wont be seen. That is why either of the letters disappears.1.The writer of the passage thinks that _ there is a blind spot on the eye.A. few people know B. no one knows C. most people know D. all the people know2. The word “disappear” in the passage means _ in Chinese.A. 驅散 B. 消散 C. 消失 D. 遺失3. You

12、fail to see the letter L in the experiment because _.A. your eyes are poor B. its image falls on the blind spotD. your left eye is not open C. you move it close to your eye4. In which order (順序) should you do the experiment?Hold the card Move the card nearer Close your right eye Write two English le

13、tters Look at the letter R Make a cardA. B. C. D. 5. The passage mainly (主要) tells us _.A. how to find the blind spot B. an interesting experiment C. where the blind spot is D. there is blind spot on the eye Passage 25Different weather makes people feel different. It influences (影響) health, intellig

14、ence (智力) and feelings.In August, it is very hot and wet in the southern part of the United States. People there have heart trouble and other kinds of health problems during this month. In the Northeast and the Middle West, it is very hot at some times and every cold at other times. People in these

15、states have more heart trouble after the weather changes in February or March.The weather can also influence intelligence. For example, in a 1983 report by scientists, IQ (智商) of a group students were very high when a very strong wind came, but after the strong wind, their IQ was 10% below. The wind

16、 can help people have more intelligence. Very hot weather, on the other hand (另一方面), can make it lower. Students in many schools of the United States often get worse on exams in the hot months of the year (July and August). Weather also has a strong influence on peoples feelings. Winter may be a bad

17、 time for thin people. They usually feel cold during these months. They might feel unhappy during cold weather. But fat people may have a hard time in hot summer. At about 18C, people become stronger.Low air pressure (氣壓) may make people forgetful. People leave more bags on buses and in shops on low

18、-pressure days. There are a “good weather” for word and health. People feel best at a temperature of about 18 centigrade (攝氏度).Are you feeling sad, tired, forgetful, or unhappy today? It may be the weathers problem.1._ can have a bad effect (作用) on health.A. Hot and wet weather B. Good weather C. Wa

19、rm weather D. High intelligence2.People may have more intelligence when _ comes.A. a rain B. very hot weather C. a strong wind D. low air pressure3.Low air pressure may make people _.A. forgetful B. sad C. angry D. tired4.In “good weather” of 18 centigrade, _.A. people are very forgetful B. people c

20、ant do their work wellC. thin people feel cold D. people are in better health5.The writer wants to tell us that _.A.hot and cold weather influences all people in the same wayB.weather influences peoples lives C.IQ never changes during weather changesD.There is a good kind of weather for peoples work

21、 and healthPassage 26Now satellites are helping to forecast(預報)the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere (大氣), because this is where the weather forms (形成). They send these pictures to the weather stations. So meteorologi

22、sts (氣象學家) can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change. Today, nearly five hundred weather stations in sixty countries receive satellite pictures.When they receive new pictures, the meteorologists compare them with earlier

23、 ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this. So the weather satellites are a great help to the meteorologists. Before satellites

24、 were invented, the scientists could forecast the weather for about 24or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead (提前). 1.Satellites travel _. A. in space B. above space C. above the ground D.

25、in the atmosphere 2.Why do we use the weather satellites to take pictures of the atmosphere？Because _.A. clouds form there B. the weather forms there C. the weather satellites can do it easily D. the pictures can forecast the weather 3.Meteorologists forecast the weather _.A.without studying satelli

26、te pictures B. before they receive satellite pictures C. when they have received satellite pictures D. after they have compared the new satellite pictures with the earlier ones 4.Maybe we'll soon be able to forecast the weather for _.A. one day B. two days C. five days D. seven days or even long

27、er 5.The main idea of this passage is that satellites are now used in _.A. taking pictures of the earth B. receiving pictures of the atmosphere C. weather forecasting D. doing other work in many ways Passage 27Paragraph 1Scientists have learned a lot about the kinds of people need. They say that the

28、re are several kinds of food that people should eat every day, they are: (1) green and yellow vegetables of all kinds; (2) citrus (柑桔) fruits and tomatoes; (3) potatoes and other fruits and vegetables; 94) meat of all kinds, fish and eggs; (5) milk and foods made from milk; (6) bread or cereal (谷類),

29、 rice is also in this kind of food; (7) butter, or something like butter.Paragraph 2People in different countries and different places of the world eat different kinds of things. Foods are cooked and eaten in many different kinds of ways. People in different countries eat at different times of the d

30、ay. In some places people eat once or twice a day; in other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesnt matter whether foods are eaten raw or cooked, canned (罐裝的) or frozen (冷凍的). It doesnt matter if a person eats dinner

31、at 4 oclock in the afternoon or at eleven oclock at night. The important thing is what you eat every day.Paragraph 3There are two problems, then, in feeding the large number of people on the earth. The first is to find some way to feed the worlds population so that no one is hungry. The second is to

32、 make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.1.According to(依據)the scientists，which of the following groups of food is the healthiest for your lunch？ A. Chicken, apples, cereal and cabbages. B. Potatoes, carrots, rice and bread. C. Oranges

33、, bananas, fish and tomatoes. D. Beef, pork, fish and milk,2.It is important for people to eat _.A.three times a day B. dinner at twelve o'clock C. cooked food all the time D. something from each of the seven kinds of food every day 3.People in different countries and different places of the wor

34、ld _ . A. have the right kinds of food to eat B. cook their food in the same way C. have their meals at the same time D. eat food in different ways 4.Which of the following is not true？ A. People in some places don't have enough to eat. B. There are too many people in the world.C. One of the pro

35、blems is that no one is hungry.D. The scientists are trying to make people grow to be strong and healthy.5.If there is Paragraph (段落) 4, what do you think is going to be talked about？ A. When people eat their lunch.B. What to do with the two problems.C. How to cook food in different ways.D. Why peop

36、le eat different kinds of food.Passage 28What do Napoleon, Clinton and Wang Nan have in common? They are all left-handed. Today, about 15% of the number of people is left-handed. But why are people left-handed? The answer is the way the brain (大腦) works. The brain has two halves- the right half cont

37、rols the left side of the body, and the left controls the right side of the body. So right-handed people have a strong left-brain and left-handed people have a strong right brain.The two halves of he brain are about the same size. But each side controls different things. The left side controls langu

38、age, math and logical (邏輯的). When you remember new words, or when you put things in order, you use your left side.The right side of the brain controls your love of art, colors and music. It is also good at recognizing (識別) faces. This does not mean that all artists are left-handed and all accountant

39、s (會計) are right-handed. Some right-handers have a strong right brain, and some left-handers have a strong left-brain. 1.The phrase “in common” in the first sentence means _.A. the same B. different C. strange D. interesting2.People who are right-handed or left-handed are mostly decided by _.A. thei

40、r parents B. their minds C. the way the brain works D. the way the head works3.Each side of the brain _.A. likes music and math B. controls different things C. controls the same thing D. has two halves4.When you are singing, you are using your _.A. logic thinking B. heart C. left brain D. right brai

41、nPassage 29Before you use your new microwave oven, read the instructions carefully. Each oven has its own control panel (控制板), but most microwave ovens operate in a similar way. Look at the control panel shown here. It shows the time at the top of the panel. Under the time are the different function

42、s(功能).You can press (按) Defrost, Cook, Clock, or Power. You can also warm food by pressing Reheat Times.Under the functions are the numbers. These numbers are shown as on telephone, from zero through nine. You can press the numbers to set the cooking time in seconds or minutes. Under the numbers are

43、 Start and Clear.A microwave oven will automatically (自動的) cook on HIGH (power level 10) unless you enter a lower power level. Suppose (假設)you want to cook a serving of broccoli for two minutes and forty-five seconds on MEDIUM power (level 5). First, press the numbers 2, 4 and 5 (two minutes, forty-

44、five seconds). Then press Power. Next, press the number 5. At last, press Start to begin cooking. If you make a mistake, press Clear. This will clear the display and allow you to start over again.閱讀短文，然后根據其內容回答下列問題。 1.What is the main idea of the passage?_2.What functions does a microwave oven have?

45、_3.How would you cook green beans for two minutes and thirty seconds at power level 7?_4.What is the last function you press each time you set the controls?_5.What does “Clear” allow you to do when you press it?_Passage 30No one knows why we sleep, but its certain that we need to. People who are pre

46、vented from sleeping begin to suffer obvious effects after a few daysthey think less clearly, and they fall asleep during the working hours.There are no rules about sleep. Generally speaking, grown-ups sleep about 7 and a half hours each night and probably more than 60 percent get between seven and

47、eight hours. But perhaps eight percent are quite happy with 5 hours or less, and four percent or so find that they want ten hours or more. If you feel all right, youre probably getting enough sleep. The important thing is not to worry how much other people gettheir needs may be different. Exercise d

48、oesnt seem to increase the need for sleepoffice workers, for example, sleep for about as long as people doing physically active work.Children sleep more than grown-upsperhaps 14 to 18 hours soon after birth, going down to grown-up levels by early teenage (青少年). Sleep patterns also tend (傾向) to be di

49、fferent in the old people, who may sleep less at night than they did when younger, find sleep getting more broken, and often make it a rule to sleep during the daytime.1.Some people cant think clearly because _.A. they have bad memory B. they feel sleepy during the working hoursC. they dont have eno

50、ugh sleep D. they are certain to be kept from going to bed2.Whether you have got enough sleep is judged (判斷) by _.A.how many hours you have slept B. how many hours you need to sleepC. if you do exercise and physical work D. if you feel fresh energetic3.According to the passage, a boy of 14 years old

51、 sleeps _.A.as long hours as a grown-upB.much longer hours than a grown-upC.for 14 hours each nightD.for less than 8 hours each night4.Which of the following is True?A.All grown-ups much have at least eight-hour sleep.B.Most of grown-ups sleep for seven or eight hours.C.Quite a few people need only

52、5 hours or less for them to sleep.D.No grown-ups sleep more than ten hours.Passage 31Some people want to be sent into space after their death, others want to lie deep under the sea. But most people want to go into the freezer (冷藏庫). These are believers in cryogenics (低溫冷凍學). Now some diseases can

53、9;t be cured, but they may be cured sometime in the future. So some people hope that their bodies can be frozen after they die. When a cure is found，warm up his or her body, bring it back to life and take the cure. Once the body is frozen, it is kept in liquid nitrogen(液態氮)at a temperature of 328 de

54、grees below zero. Now around a thousand people are going to take cryogenic treatment (處理), though most scientists say it won't work. If we freeze huge creatures(生物)like humans, every one of their cells(細胞)will be broken. Can they be brought back to life in the future？ 閱讀短文，然后根據其內容回答下列問題。1.Where

55、do most people hope that their bodies are kept after their death？ _ 2.Why do they want the world to keep their bodies well？ 3.How do scientists usually keep a dead man's body？ 4.How many people are going to take cryogenic treatment after they die？ 5.Can a man who died of cancer come back to life

56、 in the future if his body is frozen？Why？Section III 科普小品篇答案與解析Passage 23【答案與解析】本文介紹了科學家對阿斯匹林的研究成果。實驗表明，阿斯匹林可以預防或削弱老年人患心臟病的危險，但實際的效果和服用者的飲食有一定的關系。研究人員說，服用可藥品要遵醫囑。1. D。短文首段的末句“sharply reduce the chance that a healthy, older man will suffer from a heart attack.”即是本題答案的出處.2.D。注意“reduce the chance that a healthy, older man will suffer from a heart attack .”本句中的healthy, older這兩個詞，即可得出答案。3.A。文章最后一段是說，盡管的這種新用途對病人很有