单项选择题

The computations of the computer are measured in （）

A．seconds
B．microseconds
C．milliseconds
D．nanoseconds

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单项选择题
When he traveled abroad, Mr. Smith （）

A．learned boxing
B．forgot all about his business
C．raised the level of production
D．shook his head all the time
单项选择题
In the second paragraph, the word gestures means （）

A．body movements
B．simple words
C．pens or pencils
D．handshakes
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