题目内容
【题目】Sales of CDs have declined dramatically since the early 2010s, when people ______ to enjoy music downloaded from the internet.
A. have begun. B. began. C. begin. D. would begin.
【答案】B
【解析】
考查动词时态。句意:自2010年代初以来,CD的销量急剧下降,当时人们开始享受从互联网下载的音乐。when引导的是定语从句,此处指the early 2010s发生的事,用一般过去时。故选B.
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