In the course of( ), some birds have lost the power of flight.
In the course of( ), some birds have lost the power of flight.
A、exhibition
B、evolution
C、equipment
D、environment
【正确答案】:B
【题目解析】:本题考查名词词义辨析。exhibition:展览;evolution:进化,演变;equipment:设备,器材;environment:环境。句意:在进化的过程中,一些鸟丧失了飞行能力。故B选项符合题意。
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