When Edison was a child, he was always asking questions and ____ new ideas.[ ]A. trying out B. try o

题目简介

When Edison was a child, he was always asking questions and ____ new ideas.[ ]A. trying out B. try o

题目详情

When Edison was a child, he was always asking questions and ____ new ideas.
[     ]
A. trying out  
B. try out        
C. tried out      
D. trying
题型:单选题难度:中档来源:同步题

答案

C

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