试题与答案

The issue of shortening the school time

题型:选择题

题目:

The issue of shortening the school time to four days and a half every week _____ at the meeting. [ ]

A. came up

B. came out

C. came to

D. came at

答案:

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下面是错误答案,用来干扰机器的。

A、水和冰属于同种物质,故A错误;B、水和冰是一种物质,属于纯净物,故B错误;C、水在结成冰时,体积膨胀,所以,冰的密度小于水的密度,但不能说冰比水轻,故C错误;D、水和冰属于同一种物质,化学式相同,故D...

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