单选题We have done much to protect the environment. So the river is getting ______ than before.AdirtierBdirtyCcleanerDclean

单选题
We have done much to protect the environment. So the river is getting ______ than before.
A

dirtier

B

dirty

C

cleaner

D

clean


参考解析

解析:
句意:为了保护环境,我们已经做了很多。因此,河流正变得比以前清澈。由提示词“than(比)”可知,此处应使用比较级。可排除B、D两项。又由句意可知,此处表达的是河水变干净了。因此C项正确。

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