1. Domestic automobile manufacturers have invested millions of

dollars into research to develop cars more gasoline-efficient even

than presently on the road.

(A) into research to develop cars more gasoline-efficient even than

presently on the road

(B) into research for developing even more gasoline-efficient cars on

the road than at present

(C) for research for cars to be developed that are more gasoline-

efficient even than presently on the road

(D) in research to develop cars even more gasoline-efficient than

those at present on the road（D）

(E) in research for developing cars that are even more gasoline-

efficient than presently on the road

请NN们解释做题思路

1。 先确定对比成分

2， 分析形容词修饰关系。