Titan is believed to be the only body in solar system other than the Earth with liquid on

问题补充：

Titan is believed to be the only body in solar system other than the Earth with liquid on surface.

A. the; /

B. /; the

C. /; /

D. the; the

答案：

A. the; /

B. /; the

C. /; /

(答案→)D. the; the

解析：太阳系是独一无二的事物,为特指,某物表面也是特指,所以都需要加定冠词,故选D.