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问题 名词解释

误差

答案

参考答案：

测量值与真实值之差。

完形填空

My home is about 10 kilometers from school. I usually ___小题1:____(have) a quick breakfast. And I___小题2:___(步行)to the bus station. Then the bus ___小题3:____(take) me to school. It __小题4:___(花费) me 25 ____小题5:_____(分钟).
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单项选择题

0 6 24 60 _________ ( )

A．126

B．136

C．144

D．120
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