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专题检测卷(二十五)
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A
The computer plays an important part in our everyday life. It is one of the great 1 in the world in the twentieth century. It works for us not only at home, in the offices, in big shops, 2 at schools. Today it is used in many 3 . It really brings the world large wealth and happiness.
The first computer in the world was 4 Enid. It was built in America in 1946. It was 5 and heavy. 6 it was born, it has been developing very fast. Until now it has gone 7 four periods and changed a lot. There’re many kinds of computers.
