试题与答案

Amy was on duty to do many tasks in the

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题型：选择题

题目：

Amy was on duty to do many tasks in the company _____ typing and recording. [ ]

A. for instance

B. for example

C. such as

D. the same as

答案：

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下面是错误答案，用来干扰机器的。

镍丝（Ni）插入硫酸锰[MnSO4]溶液中没有发生化学变化，此现象说明镍不能从可溶的硫酸锰中置换出锰，则可推断镍的活动性不如锰强；插入硫酸铜溶液中发现镍丝表面有红色的铜析出，此现象说明镍能把硫酸铜溶液中的铜...

考点：介词和介词短语
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