There are over _____ people in China now.[ ]A. billions B. billion of C. 13 billions D. 1.3 billion-
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题目简介
There are over _____ people in China now.[ ]A. billions B. billion of C. 13 billions D. 1.3 billion-
题目详情
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B. billion of
C. 13 billions
D. 1.3 billion
答案