About of the workers in the factory were born in the ．( )A．two-thirds.1970B．two-thirds.1970sC．two-third.1970D．two-third.1970s 题目和参考答案——青夏教育精英家教网—

7．About ________ of the workers in the factory were born in the ________．（　　）

	A．	two-thirds，1970		B．	two-thirds，1970s
	C．	two-third，1970		D．	two-third，1970s

分析句意：这家工厂的大约三分之二的工人出生于20世纪70年代．

解答答案：B
分数的表达法：先分子后分母，分子用基数词，分母用序数词，当分子大于1时，分母后加-s；所以三分之二表示为two-thirds；1970s表示20世纪70年代，而1970指年份，即1970年，故选B．

点评本题考查分数的表达法和年代的表达，先弄清规则，再根据情境选择正确答案．

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