More than two _______years ago, people knew little about the universe.
A.thousandsB.thousandC.thousandsofD.thousandof...
A. thousands
B. thousand
C. thousands of
D. thousand of 展开
B. thousand
C. thousands of
D. thousand of 展开
1个回答
2013-08-10
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答案B
此题考查名词的量。确切数量常用数词+hundred/thousand/million/billion+名词的复数形式;不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式.
此题考查名词的量。确切数量常用数词+hundred/thousand/million/billion+名词的复数形式;不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式.
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