试题与答案

Now more and more people have come to kn

题型:选择题

题目:

Now more and more people have come to know the role that trees _____in our natural environment.[ ]

A. do

B. take            

C. play              

D. work

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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