Câu hỏi:
30/07/2020 4,315Drinking water ________ excessive amounts of fluorides may leave a stained or mottled effect on the enamel of teeth.
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Trả lời:
Đáp án A
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Workers who do not obey the safety regulations will be _______ immediately.
Câu 3:
____ no two people think exactly alike, there will always be disagreement, but disagreement should not always be avoided; it can be healthy if handled creatively.
Câu 5:
In ______ people, the areas of the brain that control speech are located in the left hemisphere.
Câu 6:
Stars shine because of _______ produced by the nuclear reactions taking place within them.
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