单选题
21.
By 1990, Australia had______than it had people.
A、
15 times sheep
B、
15 times more sheep
C、
15 more times sheep
D、
15 times sheep more
【正确答案】
B
【答案解析】
这是一个进行倍数比较的表达法之一，用“X times more…than…”；另一种说法是“X times as many／much…as…”；本题也可改写成：Australia had 15 times as manysheep as it had people．
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