中国大学MOOC: The earth has plenty of water that ________ most of its surface. (cover)
举一反三
- Water (cover) most of the earth’s surface.
- （） 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
- ___from space, our earth ,with water covering over 70% of its surface, appears as a “blue planet”
- The atmosphere is as much a part of the earth as _______ its soil and water of its lakes, rivers and oceans. A: has B: do C: is D: are
- 中国大学MOOC: If the electric flux through a closed surface is 0, then there is no net charge inside the surface.