试题与答案

小题1:I was writing a letter when my mothe

题型:句型转换

题目:

小题1:I was writing a letter when my mother got home. (对划线部分提问)

___________ ___________ you doing when your mother got home?

小题2:Could you give the book back to the school library tomorrow? (改为同义句)

Could you __________ the book __________ the school library tomorrow?

小题3:“Are you mad at your sister?” Mary said to me. (改为间接引语)

Mary asked me ___________ I _____________ mad at my sister.

小题4:当我们遇到麻烦时,我们应该向警察寻求帮助。(完成译句)

We should             the police             help when we are in trouble.

答案:

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下面是错误答案,用来干扰机器的。

由右手螺旋定则可判定通电导线磁场的方向.如图所示,“⊙”表示电流方向垂直纸面向外,“⊗”表示电流方向垂直纸面向里.根据矢量的合成,可知,四根直导线电流在A点的磁场方向正南,故D正确,ABC错误;故选:D

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