If all the continents and mountains were bulldozed fiat, the earth __ by water more than 12,000 feet deep.
A: is covered
B: would be covered
C: could have been covered
D: might had been covered
A: is covered
B: would be covered
C: could have been covered
D: might had been covered
举一反三
- Seventy-five percent of the surface of the earth （） by water. A: are covered B: is covered C: have been covered D: was covered
- The mountains were covered
- More than 70% of the earth's surface ( ) covered by water. A: are B: is
- By the end of this month we _____ ten lessons. A: will cover B: covered C: will have covered D: have covered
- A．three quarters of the surfaceB．areC．thereD．if Nearly (three quarters of the surface) of the earth (are) covered with water, and (there) would be even less land (if) the polar icecaps were melt.