----Jack can’t concentrate on his lessons recently.

----Yes, that may ________ why he did so badly in the last test.

A. answer for B. account for

C. call for D. stand for

B

【解析】

試題分析:句意:---杰克最近不能專心于他的功課。----是的,這可能說明了為什么他在上次考試中表現(xiàn)如此差的原因。A. answer for 負責,B. account for 說明原因,C. call for需要,D. stand for代表。根據(jù)語境故選B。

考點:考查動詞短語的用法。

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