the more...the more....

新东方 Exercise10 T8

The lower -------in a room ,the more slowly our eyes focus.

A. the level of lighting   B.light level

C.leveling of light         D.lighting is level

请问为什么选A呢?还有请问一下句型的用法...

C和D显然不对，我Google了一下，似乎"The more..."习惯后面要接the的

希望这有帮助