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The atomic weight of oxygen is_____than ______of the hydrogen. A. 15 times heavier; that B. 15 times...
题目内容:
The atomic weight of oxygen is_____than ______of the hydrogen.
A. 15 times heavier; that
B. 15 times heavier: those
C. 16 times as heavier; that
D. 16 times as heavy; those
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