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单选题
12.Nearly of the 9000 species of birds feed on insects.
A
A. the three fifth
B
B. three fifths
C
C. three fifth
D
D. the three fifths
答案解析
正确答案：B
解析：
12.【翻译】9000种鸟类中有将近五分之三的鸟类是以昆虫为食的°【精析】B分数词由基数词和序数词构成，分子用基数词，分母用序数词，且分子大于1时，作分母的序数词要 用复数形式；分子与分母之间可以加连字符.也可以不加。因此，空处应用three fifths或three-fifths，前面不用加冠 同故选B
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