After years of careful observation in the wild, Jane Goodall was finally able to _____ the social sy

题目简介

After years of careful observation in the wild, Jane Goodall was finally able to _____ the social sy

题目详情

After years of careful observation in the wild, Jane Goodall was finally able to _____ the social
system of chimps. 
[     ]
A. carry out          
B. work out          
C. look out          
D. pick out
题型:单选题难度:中档来源:河北省期中题

答案

B

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