题目内容
【题目】The children planted more trees and flowers after they ________ Greener China.
A. joined B. took part
C. joined on D. became
【答案】A
【解析】句意:孩子们加入了绿色中国组织后,种下了更多的树和花。考查动词(短语)辨析题。become成为(一员),后接a member of,可排除。take part in指参加某一活动并发挥作用;join既可指参加一群人的活动,也指加入某个组织。Greener China绿色中国组织,根据句意语境,可知选A。

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