问题
选择题
More and more people have a low-C life and the air is _________ than before.
A．good
B．more good
C．better
D．the best
答案
答案：C
整句理解：越来越多的人过低碳生活，低碳后的空气质量应当比以前更好，所以用good的比较级better，所以选C。
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