-What do you know about the population of China?-- It over 1 200 million and 80 pe

问题补充：

---- What do you know about the population of China?

---- It over 1,200 million and 80 percent of it peasants.

A. is; is

B. are; are

C. are; is

D. is; are

答案：

A. is; is

B. are; are

C. are; is

(答案→)D. is; are

解析：population作为整体作主语时，谓语动词用单数形式，如果就其中某部分而言，谓语动词用复数形式，也就是说出现分数、百分数修饰名词，那么谓语动词的单复数形式要根据名词的形式和意义来决定，如Two thirds of the books are about science. 而Two thirds of the book has been finished.