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

游客2025-03-17 24

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 C

解析应改为our，代指前面的those of us。

转载请注明原文地址:https://tihaiku.com/zcyy/4001596.html

相关试题推荐

随机试题

最新回复(0)

Themachinecan’tbemadeperfectovernight;infact,itshouldbeimproved____