John got his phone for his birthday,       his parents don’t let him use it in s

John got his phone for his birthday,       his parents don’t let him use it in s

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John got his phone for his birthday,       his parents don’t let him use it in school. 
A.howeverB.whichC.butD.when

答案
C
解析
本题考查连词。However然而,可是;which哪一个;but但是; when既然,当……时候。句意:约翰生日得到一部手机,但是他父母不让他在学校里使用。用于句子中间时,but之后一般不得使用逗号,而however则必须用逗号与句子其它部分分开。故选C。
举一反三
— Whose money is this?
— Just leave it        it is. It doesn’t belong to us. 
A.even ifB.whichC.whereD.so that

题型:不详难度:| 查看答案
Scientists say it may be five years ______ it is possible to test this medicine on human patients.
A.sinceB.untilC.beforeD.when

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We should give the disabled encouragement to live _________ as we do.
A.as a rich and full lifeB.as rich and full a life
C.so a rich and full lifeD.so rich and full a life

题型:不详难度:| 查看答案
______ you’ve got the chance, you might as well make full use of it.
A.Now thatB.AfterC.AlthoughD.As soon as

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—I’m green at everything.
—Don’t worry.  ________you get older,you will get more experience.
A.AsB.TillC.UnlessD.Since

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