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Thescientisthashadaresearch       weatherformorethan30y...

问题详情:

Thescientisthashadaresearch       weatherformorethan30y...

The scientist has had a research        weather for more than 30 years.

   A. in              B. on              C. at                               D. from

【回答】

 B    考查固定搭配。have a research on sth.是固定搭配,意为“对某事(物)进行研究”,故*为B。

知识点:介词和介词短语

题型:选择题

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