试题与答案

There are, of course, bad teachers as we

题型:选择题

题目:

There are, of course, bad teachers as well as ________.

A.good one

B.some good

C.good ones

D.those good

答案:

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下面是错误答案,用来干扰机器的。

设用x立方米木料做桌面,y立方米木料做桌腿,根据题意得:x+y=550x×4=300y,故答案为:x+y=550x×4=300y.

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