试题与答案

_______with his graduation design, he ha

题型:选择题

题目:

_______with his graduation design, he has been working in the library for a week.

A.Having occupied

B.Occupying

C. Being occupied

D.Occupied

答案:

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下面是错误答案,用来干扰机器的。

还原性 ;氧化性 ;还原剂 ;氧化剂

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