
.Three-fourths of the surface of the earth_________sea. A.is B.are C.were D.has bee
.Three-fourthsofthesurfaceoftheearth_________sea.A.isB.areC.wereD.hasbeen...
.Three-fourths of the surface of the earth_________sea. A.is B.are C.were D.has been
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A |
本题的含义是地球表面的四分之三是海洋,表示的是一个客观的事实用一般现在时,本题的主语为不可数名词,故用is,故本题选A。 |
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