Drinking water _____ excessive amounts of fluorides may leave a stained

Câu hỏi :

Drinking water ________ excessive amounts of fluorides may leave a stained or mottled effect on the enamel of teeth.

A. containing

B. including

C. made up of

D. composed of

* Đáp án

A

* Hướng dẫn giải

Đáp án A

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