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

正确答案是A. 但是emit 应该是和burn并列阿，那么emitting就不对了吧，虽然我也觉得B最后的having肯定不好。难道是as well as 可以有这样子的并列吗？

请指教。谢谢！

有没有as well as问题不大，emiting是分词结构修饰Diesel engines, 逻辑主语没问题，结构正确；（分词修饰不是并列）

B，从句中，动词以原型出现或介词（短语）+动词原型出先都是不对的；

over.

那如果emitting是分词结构修饰diesel engines, 为什么前面还有as well as呢？