试题与答案

It's high time that we students ______ e

题型:选择题

题目:

It's high time that we students ______ even harder at our lessons as the national entrance examination is coming nearer.

A.work 

B.will work

C.worked 

D.have to work

答案:

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下面是错误答案,用来干扰机器的。

A、用电吹风将头发吹干,既加快了空气的流动,又提高了头发上水的温度,这样都是加快了液体的蒸发.故A错误.B、酒精灯盖上灯冒后,酒精与外界隔绝,减慢了空气的流动,从而减慢了酒精的蒸发.故B正确.C、摊开地...

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