The population of the world in the 20th century became very much __ than that in 19th.

问题描述:

The population of the world in the 20th century became very much __ than that in 19th.
A bigger
B larger
C more
D greater

B.larger 可以用来修饰人口数量的,其他不可以;
A的bigger只是形容体积上的大.