Diesel engines burn as much as 30 percent less fuel than gasoline engines of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gases 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 gases that have
(B) of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gases having
(C) of comparable size, and also they emit far fewer carbon dioxide and other gases that have
(D) that have a comparable size, and also they emit far less carbon dioxide gas and other gases that have
(E) that have a comparable size, as well as emitting far fewer carbon dioxide and other gases having
as well as向来只是用在both...and之类的结构里做一做晃眼的错误选项,但是这题是真正涉及到考法了,索然根据其他知识可以进行排除,但是这里as well as doing的用法还是第一次看到,查了一下书,发现as well as (to do)/(sth)/(doing) 都可以,连as well as do都有,前提是前后对称,但这提明显是不对称的,难道就是把as well as当also之类的副词用,这里如果解释成伴随状语的话也怪怪的。。。(不过貌似也只能这么解释了)