题目内容
The scientists are studying the effects of human activities______the environment.
A. in B. at C. on D. with
C
解析:
此处所填的介词与effects搭配, 对……的有影响, 用 effect on/upon表示。我们也可以联想所学短语 have an effect on sth。
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题目内容
The scientists are studying the effects of human activities______the environment.
A. in B. at C. on D. with
C
此处所填的介词与effects搭配, 对……的有影响, 用 effect on/upon表示。我们也可以联想所学短语 have an effect on sth。