I really hope that new light will be thrown ________ the cause of extreme weather conditions by the research that is go

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1. (2021高二上·哈尔滨期中) I really hope that new light will be thrown ________ the cause of extreme weather conditions by the research that is going on.

A . in B . for C . on D . with

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黑龙江省哈尔滨师范大学附属重点中学2021-2022学年高二上学期期中考试英语试题