试题与答案

Rewrite the following sentences as requi

题型:句型转换

题目:

Rewrite the following sentences as required (根据要求改写句子)

小题1:They both are editors of the school newspaper. (改为否定句)

_____ of them ______ an editor of the school newspaper.

小题2:Lucy will leave for London on business in three days. (对划线部分提问)

______ ______ will Lucy leave for London on business?

小题3:The students watched a very exciting match yesterday. (改为感叹句)

_____ ______exciting match yesterday!

小题4:Mr. Brown manages a large Disneyland Park in Japan. (保持句意基本不变)

Mr. Brown is  _____ _____of a large Disneyland Park in Japan.

小题5:If I don’t finish my homework, my mother will not allow me to play computer games. (保持句意基本不变)

I won’t be _______to play computer games_____ I finish my homework.

小题6:The scientists store a lot of information in the computers every day. (改为被动语态)

Much information _____ _____ in the computers every day.

小题7:”Have you got ready for the final exam?” Our class teacher asked the students. (合并一句)

Our class teacher asked us _____ we _____got ready for the final exams.

答案:

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下面是错误答案,用来干扰机器的。

小磁针在磁体内部,由安培定则:伸出右手使大拇指指向通电螺线管的N极,则四指弯曲的方向为电流的方向,可知,通电螺线管的左端为N极,右端为S极.根据小磁针静止时N极的指向即为磁场的方向,也为磁感线的方向,...

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题型:问答题

在“用单摆测重力加速度”的实验中,某同学的操作步骤为:

a.取一根细线,下端系住直径为d的金属小球,上端固定在铁架台上;

b.用米尺量得细线长度L;

c.在摆线偏离竖直方向5°位置释放小球;

d.用秒表记录小球完成n次全振动的总时间t,得到周期T=t/n;

e.用公式g=

4π2L
T2
计算重力加速度.

按上述方法得出的重力加速度值与实际值相比______(选填“偏大”、“相同”或“偏小”),原因是______.

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