---He suggests the number of cars should be limited to stop air pollution.
--- , the idea is not very practical.
AAs good it sounds
B. Good as it sounds
C. Sounds good as it
D. As it sounds good
网友回答
A. As good it sounds
(答案→)B. Good as it sounds
C. Sounds good as it
D. As it sounds good
解析：句意，这是两个人之间的对话。第一个人说：“为了停止对空气的污染，他建议应该限制汽车的数量。” 第二个人说： “尽管这个主意听起来不错，但并不实用。”本句话是as引导的非主谓倒装，这种倒装的结构是：名词/形容词/动词/副词+as+主语+其他成分。as就相当于although/ though。所以这句话可以转变为：Although/ Though it sounds good , the idea is not very practical.