◎ 题干
— What's _____ population of the U. S. A. 9
— It has _____ population of about 300,000,000.

[     ]

A. a; a
B. the; a
C. the; the
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— What's _____population of the U. S. A. 9 — It has _____population of about 300,000,000. [ ]A. a; a B. the; a C. the; the …”主要考查了你对  【定冠词(the)】【不定冠词(a,an)】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。