Diesel engines burn as much as 30% less fuel than gasoline engines of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have been implicated in global warming.

A.      of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have

B.      of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gasses having

C.      of comparable size, and also they emit far fewer carbon dioxide and other gasses that have

D.      that have a comparable size, and also they emit far fewer of the other gasses having

E.       that have a comparable size, as well as emitting far fewer of the other gasses having

答案是A。我弱弱地問一句...A 中emitting和brun不平行啊...這樣可以麽？

C 我觉得and also一般是错的 至少 AS WELL AS 比它好 而且 fewer 不能修饰carbon dioxide（不可数） they指代不明确

 楼主看错了A中才是emitting和brun不平行

D中也出现了and also .并且they指代不明确。
            that have a comparable size不如
                of comparable size简洁

E that have a comparable size不如
                    of comparable size简洁    they指代不明确

啊啊...果然我老眼昏花了...

答案是A。所以我不理解为什么emitting和burn不平行也可以...