About__of the workers in the factory were born in the___.A,two-thirds;1970B,two-thirds;1970sC,two-third;1970

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About__of the workers in the factory were born in the___.A,two-thirds;1970B,two-thirds;1970sC,two-third;1970

About__of the workers in the factory were born in the___.A,two-thirds;1970B,two-thirds;1970sC,two-third;1970
About__of the workers in the factory were born in the___.
A,two-thirds;1970
B,two-thirds;1970s
C,two-third;1970

About__of the workers in the factory were born in the___.A,two-thirds;1970B,two-thirds;1970sC,two-third;1970
B
除了几分之一以外,其他分数表示都在后面序数词上加复数.
in 1970 在1970年
in the 1970s 在20世纪70年代.

答案应该是:two thirds; 1970s
三分之二 用two-third 或two thirds
70年代用1970s

B
2/3用数词+序数词(作分母用复数)表达
in the 1970s 表示20世纪70年代(十年)