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问题 选择题

Several students of our school won a(n) ________ victory in the English Drama Contest with

their excellent performing talents. 　　[ ]

A. inescapable 　　　　　

B. dispensable

C. unalterable 　　　　　

D. indisputable

答案

答案：D

不定项选择

如图所示，是一个说明示波管工作原理的示意图，电子经过电压U1加速后以速度v0垂直进入偏转电场，离开电场时的偏转量是h，两平行板的距离为d，电势差为U2，板长为L，为了提高示波管的灵敏度(每单位电压引起的偏转量h/U2)可采用的方法是

[ ]

A．增大两板间的电势差U2

B．尽可能使板长L短些

C．尽可能使板间距离d小一些

D．使加速电压U1升高一些

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选择题

Have you seen Jack recently？I wonder________with his classmates.

A．how is he getting along

B．that he is getting along well

C．what he is getting along

D．if he is getting along well
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