What is the population of China
=How many people are there in China
意思是：中国的人口是多少?__is the number of people in China?他是这种形式做，填那两个空。这种形式应该是 一个空，填What 。What is the number of ……？意思是：……的数量是多少？但他是两个空该怎么填？如果非要两个空，可以填 How much奥