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8.听短文,根据你听到的内容,选择正确答案.(短文读两遍)
16.Why are machines so important to people?
A.Because they can help us do things better and faster.
B.Because they can help us save time.
C.Because machines can work with people
17.What does a washing machine help us do?
A.Print quickly a lot of books.
B.Wash clothes quickly.
C.Travel faster.
18.What machine is NOT mentioned?
A.A printing machine.
B.Bicycles.
C.A television.
19.When was the computer invented?
A.In 1936.
B.In 1946.
C.In 1956.
20.How fast does a computer count?
A.It counts thousands of times faster than a man does.
B.It counts millions of times faster than a man does.
C.It counts billions of times faster than a man does.

分析

解答 ABCBB

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