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说明理由 1.-Mary,now you have a chance to study in Singapore for

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说明理由
1.-Mary,now you have a chance to study in Singapore for a year as an exchange student.Are you interested?
-______ that be true?Of course I'll go.
A.May B.Might C.Can D.Must
2._____ on the floor of small ponds is a new farming industry.
A.Raising crabs B.Crabs are raised
C.Crabs raised D.Raised crabs
3.We have been told that under no circumstances _____ the telephone in the office for personal affairs.
A.may we use B.we may use C.we could use D.did we use
说明理由 1.-Mary,now you have a chance to study in Singapore for
1.选C .那可能是真的吗?如果是,我会去.can是可能的意思.
2.选A.该句子缺主语,Raising crabs 是动名词作主语.
3.选A.under no circumstances后面用倒装,排出B,C,A中的may是可以的意思,根据整句意思,最为合适.
再问: 请问第二题为什么不选C呢? Crabs后面的raised做非谓语?
再答: 如果是一句话作为主语,应该要加一个引导词吧;从句意上讲 螃蟹是一种农业技术也不对呀。