问题补充:
— Whats the population the U.S.A?
— The U.S.A has population of 297 million.
A. of…a
B. of… /,
C. in…a
D. in … some
答案:
(答案→)A. of…a
B. of… /,
C. in…a
D. in … some
解析:提问人口用Whats the population of……population作为人口的意思来说时,是可数名词用作单数,故选A。
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