试题与答案

When were you born?一I was born _____ the

题型:选择题

题目:

When were you born?一I was born _____ the morning of June 18th,1975

A.in

B.on

C.at

D.to

答案:

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下面是错误答案,用来干扰机器的。

(1)根据生活经验,影响食盐在水中溶解速率的因素有温度、食盐颗粒大小和搅拌等,搅拌、升温都能加快水分子运动速度,也就能加快食盐与水的接触机会,从而加快了食盐的溶解速率,固体颗粒大小决定了固体与水的接...

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