(Those of us) who work in chemical (laboratories), should have (their) lungs (ch

游客2025-03-14 28

问题 (Those of us) who work in chemical (laboratories), should have (their) lungs (checked) quite regularly.

选项 A、Those of us
B、laboratories
C、their
D、checked

答案 A

解析人称一致错误，应改为Those。主语是在化工厂工作的人，对应后面的代词their。

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