问题
选择题
－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
答案
答案：A
考查代词的用法。“乡下的污染情况怎样了？”“很幸运，它不像大城市那样严重。”that用于比较级，且指代不可数名词。those指代复数形式。故选A。