A-A+
12． About_______ of the workers in the factory
问题详情
12． 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
参考答案
正确答案：B
12．B【解析】句意：工厂里大约2/3的工人出生在20世纪70年代。分数的表达为分子用基数词，分母用序数词，如果分子大于1，则分母要用复数，排除C、D，年代的表达要在年份后加s．故选B。
