高中英语阅读理解（科技类）(总12页).doc

精选优质文档-----倾情为你奉上阅读理解（科技类） Passage OneThe computer is a useful machine. It is the most important invention in many years. The oldest kind of computer is the abacus(算盘), used in China centuries ago, but the first large, modern computer was built in 1946. A computer then could do maths problems quite fast.Today computers are used in many ways and can do many kinds of work. In a few years the computer may touch the life of everyone, even people in faraway villages.In the last few years, there have been great changes in computers. They are getting smaller and smaller, and computing faster and faster, Many scientists agree that computers can now do many things, but they cannot do everything. Who knows what the computers of tomorrow will be like? Will computers bring good things or bad things to people? The scientists of today will have to decide how to use the computers of tomorrow. 1. The computer is a _______ machine. A. helpful B. strange C. large D. dangerous 2. The first large, modern computer was built about _______ years ago. A. a few B. forty C. sixty D. eighty 3. The computers of today are _______ than before. A. bigger B. fewer C. smaller D. taller 4. Computers can do _______. A. everything B. anything C. nothing D. lots of things 5. The scientists of today _______ how to use the computers of tomorrow. A. may decide B. must decide C. can make D. needn’t make Passage TwoWarm water freezes more quickly than cold water. Sir Francis Bacon said that almost four hundred years ago. But few people believed him until 1970. In that year a Canadian scientist George Kill proved the English professor was right. Dr Kill filled an open oil pail(桶) with cold water. He filled another with warm water. He put both in the same low temperature. The warm water froze first. The lack of covers on the pails is the secret. Some of the warm water changed into vapor. This meant that less of the warm water was left to be frozen. And so the warm water froze faster than the cold water even though it had a greater temperature drop to make. 1. Hundreds of years ago, Sir Francis Bacon found _______. A. the temperature of warm water drops faster than that of cold waterB. warm water is heavier than cold waterC. warm water has the same temperature as cold waterD. warm water is not as useful as cold water 2. What Sir Francis Bacon said was right, but people didnt believe him until _______. A. late in the 20th century B. early in the 20th centuryC. three years ago D. late in the 19th century 3. Leave a pail with warm water and another pail with cold water in the same low temperature, you’ll find that _______. A. cold water freezes firstB. warm water turns into ice before cold waterC. warm water and cold water freeze at the same timeD. much of cold water is changed into air. 4. Why does warm water freeze first in the same freezing weather? A. Because some of the warm water turns to vapor, the amount(数量) becomes less than that of cold water.B. Because warm water is lighter than cold water.C. Because the temperature of warm water is lower than that of cold water.D. Because cold water freezes with more difficulty than warm water.Passage ThreeIf you do not use your arm or your legs for some time, they become weak; when you start using them again, they slowly become strong again. Everybody knows that. Yet many people do not seem to know that memory works in the same way. When someone says that he has a good memory, he really means that he keeps his memory in practice by using it. When someone else says that his memory is poor, he really means that he does not give it enough chance to become strong. If a friend says that his arms and legs are weak, we know that it is his own fault(过错). But if he tells us that he has a poor memory, many of us think that his parents are to blame(受责备), and few of us know that it is just his own fault. Have you ever found that some people can’t read or write but usually they have better memories? This is because they cannot read or write and they have to remember things; they cannot write down in a little notebook. They have to remember days, names, songs and stories; so their memory is the whole time being exercised. So if you want to have a good memory, learn from the people: Practice remembering. 1. The main reason for one is poor memory is that _______. A. his father or mother may have a poor memoryB. He does not use his name or legs for some timeC. his memory is not often usedD. he can’t read or write 2. If you do not use your arms or legs for some time _______. A. you can’t use them any moreB. they will become strongerC. they become weak and won’t become strong until you use them again.D. they will become neither stronger nor weaker 3. Which of the following is NOT true? A. Your memory works in the same way。