the stars are the smaller they look as is known to all the people.A. The farther awayB.

问题补充：

the stars are, the smaller they look, as is known to all the people.

A. The farther away

B. Farther away

C. No matter how far away

D. If farther away

答案：

(答案→)A. The farther away

B. Farther away

C. No matter how far away

D. If farther away

解析：考查比较级的结构。The+比较级，the+比较级表示“越......，就越......”，前一分句表示条件，后一分句表示结果。句意“星星离我们越远，它们看起来就会越小，这是众所周知的。”故选A。