阅读理解。 It is difficult for doctors to help a person with a damaged brain. Wit
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阅读理解。 |
It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can"t fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain. Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain. Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys" blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys" brains. When the brain"s temperature was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them. |
1. The biggest difficulty in operating on the damaged brain is that _______. |
A. the time is too short for doctors B. the patients are often too nervous C. the damage is extremely hard to fix D. the blood-cooling machine might break down |
2. The brain operation was made possible mainly by _______. |
A. taking the blood out of the brain B. trying the operation on monkeys first C. having the blood go through a machine D. lowering the brain"s temperature |
3. With Dr. White"s new idea, the operation on the damaged brain _______. |
A. can last as long as 30 minutes B. can keep the brain"s blood warm C. can keep the patient"s brain healthy D. can help monkeys do different jobs |
4. What is the right order of the steps in the operation? a. send the cooled blood back to the brain b. stop the blood to the brain c. have the blood cooled down d. operate on the brain |
A. a, b, c, d B. c, a, b, d C. c, b, d, a D. b, c, d, |
答案
1-4: ADAB |
举一反三
阅读理解。 |
Putting in water fountains (饮水器) at schools, and teaching children about the health benefits of water, could reduce their risk of getting extra pounds, reports a new study that is published in the latest issue of the journal Pediatrics. The findings are based on a survey in 32 elementary schools of two German cities, Dortmund and Essen. The researchers, led by Rebecca Muckelbauer, a nutritionist(营养学家) at the Research Institute of Child Nutrition Dortmund, weighed about 3,000 children, and asked them about their beverage consumption(饮料消费量). At the beginning of the school year, the experts had water fountains added to 17 of the schools. The scientists also worked with teachers to carry out educational programs that promote the benefits of drinking water. In contrast to schools in the United States, there are very few schools in Germany that have water fountains. At the beginning of the study, there were no big differences in the number of overweight children in the different groups. But by the end of the school year, children in the schools with water fountains were 31 per cent less likely to gain extra pounds, compared to kids who went to other schools, where water drinking was not encouraged. Children in the schools with fountains increased their water consumption from about 3 up to 4 glasses a day, while those in the other schools continued to drink an average of 3 glasses. Over the research, the number of overweight kids upped from 384 to 385 out of 1,641 at the schools with water fountains. In comparison, the number of overweight kids at the other schools increased from 339 to 364 out of 1,309, Dr. Muckelbauer said. The experts cannot make any final conclusions and explain why the students who were encouraged to drink water were less likely to gain extra weight. Dr. Muckelbauer noted that according to a few other studies, drinking of water increases the rate at which calories are burned, while some other research suggested that water may temporarily decrease appetite (食欲). |
1. According to the passage, the journal Pediatrics _____. |
A. may cover the subject of the health of children B. mainly deals with the water drinking problem C. is mainly about the mental health of kids D. must be a journal entitled by a school |
2. What do we know about the survey from the passage? |
A. The teachers were also encouraged to drink water. B. The students surveyed were all overweight. C. It surveyed children in the countryside. D. It lasted for a whole school year. |
3. What can be learned from the last paragraph? |
A. Drinking water certainly decreases appetite. B. Further research is needed to support the finding. C. The experts will encourage all the students to drink water. D. Why students drinking more get less pounds will be clear soon. |
4. What would be the best title for the passage? |
A. Schools with water fountains B. Drink more water and become thinner C. Water fountains at schools help kids stay thin D. Water consumption at some German schools |
阅读理解。 |
1970 was World Conservation(自然保护)Year. The United Nations wanted everyone to know that the world is in danger. They hoped that people would act quickly in order to conserve nature(大 自然). Here is one example of the problem. At one time there were 1,300 different plants, trees and flowers in Holland, but now only 866 remain. The others have been destroyed by modern man. It is said that there are tens of thousands of kinds of animals in the world, but now many have died out(绝种). We are changing the earth, the air and water, and everything that grows and lives. We can"t live without these things. If we continue like this, we shall destroy ourselves. What will happen in the future?Perhaps it is more important to ask"What must we do now?"The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation is necessary. Many are helping to save our world. They plant trees, build bridges across rivers and so on. In a small town in the United States a large group of girls cleaned the banks of 11 kilometres of their river. Young people may hear about conservation through a record called"No one"s going to change our world."It was made by the Beatles, Cliff Richard and other singers. The money from it will help to conserve wild animals. |
1. "No one"s going to change our world"was___________ . |
A. an important book published in 1970 B. an idea that nobody would accept(接受) C. a record calling on people to conserve nature D. a newspaper report in 1970 |
2. What"s the most important thing for us to do to save our world? |
A. We should know what will happen in the future. B. We should plant more trees and flowers. C. We should clean the banks of our rivers. D. We must do what we must do to save our world. |
3. What"s the main idea of the passage? |
A. 1970 was World Conservation Year. B. The United Nations wanted everyone to know that the world is in danger. C. Conservation is necessary. D. Young people are helping to save our world. |
阅读理解。 |
Your body, which has close relations with the food you eat, is the most important thing you own, so it needs proper treatment and proper nourishment (营养).The old saying "An apple a day keeps the doctor away "is not as silly as some people think. The body needs fruit and vegetables because they contain vitamin C. Many people take extra vitamins in pill form, believing that these will make them healthy. But a good diet is made up of nourishing food and this gives all the vitamins you need. The body doesn"t need or use extra vitamins, so why waste money on them? In the modern western world, many people are too busy to bother about eating properly. They throw anything into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or made worse by bad eating habits is frightening, |
1."Your body has close relations with the food you eat."It really means that ______. |
A. all kinds of food you eat can be made into your body B. your body is made up of the food you eat C. what you eat has great effect on your health D. the more you eat, the fitter you will feel |
2. The old saying referred to in the passage tells us that ______. |
A. eating apples regularly does lots of good to our health B. the apple is the best among all kinds of fruits C. apples can take the place of doctors D. an apple is a sure cure for illness |
3. In the second paragraph, the writer tries to let us know ______. |
A. our bodies need food or we can" t live B. often eating apples is a good habit C. taking extra vitamin pills is completely useless D. a good diet is of great importance for our health |
4. In the modern western countries ______. |
A. people don"t want to pay more attention to their eating B. lots of people"s illnesses are caused or made worse by bad eating habits C. people throw everything into their stomachs without chewing D. people are only too busy to cook meals for themselves |
阅读理解。 |
Why did the chicken cross the road? To get to the other side. Most people know this joke. But recently, some people have been much more worried about how the grizzly(灰白的) bear and mountain lion can cross the road. "Millions of animals die each year on U.S. roads," the Federal Highway Administration reports. In fact , only about 80 ocelots(豹猫), an endangered wild cat, exist in the U. S. today. The main reason? Road kill. "Eco-passages" may help animals cross the road without being hit by cars. They are paths both over and under roads. "These eco-passages can be extremely useful, so that wildlife can avoid road accidents," said Jodi Hilty of the Wildlife Protection Society. But do animals actually use the eco-passages? The answer is yes. Paul Beier of Northern Arizona University found foot marks left by mountain lions on an eco-passage that went under a highway. This showed that the lions used the passage. Builders of eco-passages try to make them look like a natural part of an area by planting trees on and around them. Animals seem to be catching on. Animals as different as salamanders(火蜥蜴)and grizzly bears are using the bridges and underpasses(地下通道,下穿交叉道). The next time you visit a park or drive through an area with a lot of wildlife, look around. You might see an animal overpass(越过,通过)! |
1. The writer uses the example of "ocelots" to show that __________. |
A. an increasing number of animals are killed in road accidents B. the driving conditions have improved greatly C. the measure for protecting wildlife fails to work D. wild animals have become more dangerous |
2. From the news story, we know an eco-passage is __________. |
A. an underground path for cars B. a fence(栅栏) built for the safety of the area C. a passage(通道) for animals to cross the road D. a bridge for animals to get over a river |
3. The underlined(划线) part "animals seem to be catching on" means __________. |
A. animals begin to realize the dangers on the road B. animals begin to learn to use eco-passages C. animals are crossing the road in groups D. animals are becoming safer |
4. This passage is written to __________. |
A. protect the endangered animals B. call on drivers to be careful when seeing animals on roads C. introduce a new way to help protect animals D. tell us the main reason for the killing of animals in the US |
阅读理解。 |
Besides giving off gases and dusts into the air, humans produce waste that is poured on the environment. Often, this waste produced by major industries and people is harmful to both nature and human life. One of the main causes of the large amount of dangerous waste is that people do not realize how large a problem it is. Because it can be simply removed and sent to a landfill(废渣填埋场), the problem is often believed to end there. In addition, industries have often shown an unwillingness to find ways to deal with dangerous waste because of the related expenses. Many industries and governments build simple landfills to store waste, and often just pour waste chemicals into nearby bodies of water. Often, chemicals used for industrial production cause dangerous forms of waste. The amount of these chemicals has increased greatly in the past, but it is often difficult and expensive to get rid of these chemicals or to store them in a way safe to human life and the environment. Every year, major health problems result from dangerous waste. Sadly, it is often only after someone has died or become seriously ill that governments will take measures to reduce levels of harmful waste. Some governments have realized how serious the dangerous waste problem is and are now trying to settle this problem. They are also trying to limit the amount of waste industries are allowed to produce. Not only governments but ordinary people as well must work together to solve the problem. They can choose not to buy those products which require the production of dangerous waste, and produce less harmful waste themselves. Many scientists think that waste production can be cut. The waste can be reduced by at least one third using existing technologies and methods. |
1. What would be the best title for the text ? |
A. Measures of Reducing Dangerous Waste B. Danger of Harmful Waste to Mankind C. Dangerous Waste and Water Pollution D. Environmental Protection |
2. According to the text, people ________. |
A. do not produce harmful waste in their daily life B. do not know where to place the dangerous waste C. are not clear about how serious the dangerous waste problem is D. are not sure about where harmful waste ends |
3. What troubles industries most in dealing with the dangerous waste problem? |
A. How to get government support. B. How to increase their production. C. How to store harmful waste. D. How to cut down the related costs. |
4. What can be inferred from the passage? |
A. The polluting industries are not allowed to sell their products. B. Present technologies have settled the harmful waste products. C. Everyone should obey the government rules for the problem. D. To solve the problem requires the efforts of the whole society. |
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