试题与答案

实验中测量物体的长度,一般要测三次或更多次,这样做是为了( ) A.减小观察时由

题型:选择题

题目:

实验中测量物体的长度,一般要测三次或更多次,这样做是为了(  )

A.减小观察时由于视线与尺面不垂直而产生的错误

B.减小由于刻度尺不精密而产生的误差

C.减小由于读数时估计偏大或偏小而产生的误差

D.避免测量中可能产生的错误

答案:

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参考答案:窗前(方位)

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1. The cruel and ____(贪婪的) woman was punished by those children.

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4. In the old days,many children suffered from ____(饿) because of no food.

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8. There are five boxes ____ (装有) books and toys.

9. He was the only one of the ____ (目击者) when the accident happened.

10. Many students attended the lecture,our monitor_____(包括).

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