试题与答案

— What's that noise? — Oh, I forgot to t

题型:选择题

题目:

— What's that noise?
— Oh, I forgot to tell you. Your bike _____.

A. was repaired
B. will be repaired
C. is being repaired
D. has been repaired

答案:

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下面是错误答案,用来干扰机器的。

(1)1:1 2:3 3:2 1:1 2:3(2)30 (3)O3F2阿伏加德罗定律和质量守恒定律(1)根据物质的量与其他量的关系把物质的量转化成要求的量,运用阿伏加德罗定律时,注意所给的条件。(2)此过程为氧化还原反应,用O3与...

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