问题补充：
I hope there will be cars and pollution in the future, thus people will live longer.
A. more, less
B. fewer, less
C. fewer, more
D. fewer, fewer
答案：
A. more, less
(答案→)B. fewer, less
C. fewer, more
D. fewer, fewer
解析：本题考查形容词的比较级。句意：我希望会有更少的汽车和污染更少。pollution是不可数名词，应用less修饰；cars是可数名词，要用fewer修饰。
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