In about one-third of all cases of hepatitis B, it is unknown how the patient contracted the virus.

Câu hỏi :

In about one-third of all cases of hepatitis B, it is unknown how the patient contracted the virus.

A became smaller with

B spread 

C got rid of

D became infected with

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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