Question

--_____ of the population of the city _____workers? --About 60 percent. A．What; is B．What;.

--_____ of the population of the city _____workers? --About 60 percent. A．What; is B．What; are C．How much; is D．How much; are

Answer 1

D

考查population的用法。对人口“提问”，用what来问总人口；how much问的是“多少（比例）”。句意“这个城市人口的多少比例是工人？”“大约60%。”population作主语，谓语用单数，但是指具体的人数时，谓语用复数。故选D。

Answer 2

这个题考察population的用法。它的用法其实很简单：当population与分数、百分数连用时谓语动词用复数，单独使用（不与分数百分数连用的时候）谓语动词用单数。
如：1. What is the population of China?
2. About eighty percent of the population in this country are farmers.

另外，提问人口多少时，用How large 或者 what 而不用how much提问。
如：How large is the population of China?
或者：What is the population of China?