The survey shows that of the population in the country adults. A. three fifths; isB. thr

问题补充：

The survey shows that of the population in the country adults.

A. three fifths; is

B. three fifths; are

C. three fifth; are

D. three fifth; is

答案：

A. three fifths; is

(答案→)B. three fifths; are

C. three fifth; are

D. three fifth; is

解析：考查分数表达与主谓一致。句意：这个调查说明这个国家人口的五分之三是成年人。当分数的分子大于一时，分数的分母用复数形式，前有分数修饰时，谓语动词与被修饰名词保持一致。本句中population是集合名词表达复数含义，故谓语动词用are，选B。