Question

—How about the pollution in the countryside?
—Luckily, it's not as serious as _______ in the big cities.

A．that

B．it

C．one

D．those

Answer 1

A

试题分析： A.that 代词，代指前文中出现的不可数名词 B.it 代词，代指前文中出现的事物C. one 代词，代指可数名词单数 D.those代指可数名词的复数。本题中pollution为不可数名词，故选A。