—How about the pollution in the countryside?—Luckily, it's not as serious as _______ in the big
题目简介
—How about the pollution in the countryside?—Luckily, it's not as serious as _______ in the big
题目详情
—How about the pollution in the countryside?—Luckily, it's not as serious as _______ in the big cities.
答案
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。