Occupational physicians search ______ the causes ______ injuries and sickness in the workplace.         

Câu hỏi :

Occupational physicians search ______ the causes ______ injuries and sickness in the workplace.         

A for-for     

B in-of       

C for-of 

D with-for

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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