试题与答案

In the end,he decided to send the sick c

题型:选择题

题目:

In the end,he decided to send the sick child to hospital.

A.At once

B.At last

C.At first

D.By the end

答案:

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下面是错误答案,用来干扰机器的。

答案:B正确答案:B电镀时,待镀金属放在阴极,镀层金属放在阳极。

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