问题描述：
About( ) of the students in our school took part in the school sports meeting last friday
A.one-thirds B.two-thirds C.one-fifths D.two-thirds
标准答案是d,我也不知道是为什么,
A.one-thirds B.two-thirds C.one-fifths D.two-thirds
标准答案是d,我也不知道是为什么,
问题解答：
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