题目内容

Michelle with her children arrived in Beijing on March21. She started           visit to China.
A．seven daysB．seven day’sC．seven—dayD．seven—days
C

试题分析：句意：米歇尔和她的朋友在三月二十一日到达了北京。她开始了七天的中国观光。分析：七天的，有两种表示方法1.名词所有格形式，seven days’. 2. 数字与单位加连字符的形式，seven—day.结合选项只能选择第三项。故选C
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