Recent research has thrown new lightthe cause of the disease.[ ]A. on B. atC. forD. by-高三英语

题目简介

Recent research has thrown new lightthe cause of the disease.[ ]A. on B. atC. forD. by-高三英语

题目详情

Recent research has thrown new light      the cause of the disease.  
[     ]
A. on        
B. at        
C. for        
D. by
题型:单选题难度:偏易来源:天津同步题

答案

A

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