◎ 题干
— Did you listen to the report last Friday?
— Yes, it was about the shortage of migrant workers. That was the first time I ____ about the subject.
[     ]
A. heard
B. was hearing
C. would hear
D. had heard
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— Did you listen to the report last Friday?— Yes, it was about the shortage of migrant workers. That was the first time I ____ about the subject. [ ]A. heard…”主要考查了你对  【过去完成时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。