【题目】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
在线课程【答案】A
【解析】
试题分析：考查倍数表达法。句意：氧原子是氢原子重量的16倍。is 16 times havier是倍数表达法，that代指 weight，可知选A。