Those of us who smoke should have______ lungs X-rayed regularly since we are all

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问题 Those of us who smoke should have______ lungs X-rayed regularly since we are all aware of the danger of smoking.

选项 A、his
B、our
C、their
D、her

答案 B

解析本题综合考查人称代词一致，空白处所填的词修饰those of us，所以应该用our。题意为，由于我们都知道吸烟的危害，(所以)我们当中那些吸烟的人应该定期做X光检查。

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