About seventy percent of the surface of our planet ( ) covered by water.
A: are
B: is
C: were
D: was
A: are
B: is
C: were
D: was
举一反三
- 2.______ of the earth surface is covered by water. A: thirty percent B: forty percent C: fifty percent D: seventy percent
- （） from the moon, our earth ,with water（）seventy percent of its surface, appear as a "blue ball". A: See ,covered B: Seeing ,covering C: Seen ,covering D: To see, to cover
- Seventy-five percent of the surface of the earth （） by water. A: are covered B: is covered C: have been covered D: was covered
- About ________ percent of the earth's surface is covered with water A: 29 B: 82 C: 71 D: 100
- More than seventy percent of the water on the earth is sea water.