_from the moon,our earth with water_seventy percent of its surface,appears as a "blue ball"

_from the moon,our earth with water_seventy percent of its surface,appears as a "blue ball".

Seen from the moon,our earth with water covering seventy percent of its surface,appears as a "blue ball".

选C.非谓语动词用法

A:Seen;covered

C:Seen;covering

是A:Seen;covered ，sorry!

选C（第一个空，地球是被看，所以是被动的，第二个空，水覆盖地球表面，水是主动的）