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Wehaveproducedthisyearaswedidin1999.A.asmuchcottontwiceB.astwicemuchcottonC.muchastwicecottonD.twiceasmuchcotton请写明选择的原因,Three-fourthsofthesurfaceoftheearthcoveredwithwater.A.isB.areCisbe

题目详情
We have produced_______this year as we did in 1999.
A.as much cotton twice B.as twice much cotton
C.much as twice cotton D.twice as much cotton
请写明选择的原因,
Three-fourths of the surface of the earth_____covered with water.
A.is B.are C is being D has been
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答案和解析
We have produced___d____this year as we did in 1999.
A.as much cotton twice B.as twice much cotton
C.much as twice cotton D.twice as much cotton
棉花不可数,数词放在名词前面.
Three-fourths of the surface of the earth___D__covered with water.
A.is B.are C is being D has been
现在完成时