---Do you know the population of China is?---Yes it has the population in the world ab

问题补充：

---Do you know the population of China is?

---Yes, it has the population in the world, about 1.3 billion.

A. how much, most

B. how much, largest

C. what, most

D. what, largest

答案：

A. how much, most

B. how much, largest

C. what, most

(答案→)D. what, largest

解析：英语中表示人口的多少用what进行提问，故排除AB；表示人口的多少，用large和small。所以本题选D。