Question

阅读理解　然后回答下题。

　　The computer is a wonderful machine．It is the most important invention in many years．Today it is used in many ways．In a few years the computer may touch the lives of everyone, even people in far away villages．

　　The oldest kind of computer is the abacus, used in China for many centuries．In the seventeenth century an adding machine was invented, but the first largest, modern computer was built in 1946．A computer then could do 5000 addition problems in one second．Now computers can work millions of times faster．All computers have a memory．That means information can be kept in them and be taken out at any time．Computers are getting smaller and smaller, and computing faster and faster．

　　In some large factories now there are very few people．Robots do．most of the work．For example, in a car factory, when a different kind of car comes along the line, the robot changes its work just as a man would do．How does the robot know this? A computer“tells”it what to do．

　　In the last few years there have been great changes in computers．Many scientists agree that computers cannot do everything people can do, but they also agree that computer can now do most of the things people can do．Who knows what the computers of tomorrow will be like? Will they make life better or worse, or will they bring bad things to people? The scientists of today have to think about how to use the computers of tomorrow．

1．What is the oldest kind of computer in China?

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2．When was the first largest computer built?

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3．In 1946, how many addition problems could a computer do in one second?

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4．Why do we say that computers have a memory?

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5．How can robots do many things?

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Answer 1

答案：
解析：

　　1．Abacus．

　　2．In 1946．

　　3．About 5000 addition problems．

　　4．Because the information can be kept in them and be taken out at any time．

　　5．A computer“tells”it what to do．