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科目: 来源:不详 题型:单选题

---You bought the car ten years ago?
---Yes. ____ it’s old, it still runs well.
A.BecauseB.SinceC.AlthoughD.But

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科目: 来源:不详 题型:单选题

— What’s your new math teacher like?
— Oh, he is very kind, ________ he looks serious.
A.thoughB.becauseC.if D.and

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科目: 来源:不详 题型:单选题

---How long have you known the doctor ?  
---_________he helped me three years ago.
A.When B.Before C.BecauseD.Since

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科目: 来源:不详 题型:单选题

It’s very nice_________you __________ my parents your best wishes.
A.of; sendingB.of; to sendC.for; to sendD.for; sending

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科目: 来源:不详 题型:单选题

The cost of living in Chengdu is among the lowest in China, ________ the quality of life is probably one of the highest.
A.sinceB.whenC.asD.while

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科目: 来源:不详 题型:单选题

— Why didn’t you try your best to get on the subway?
— I tried to, but it started moving ______ I could get on it.
A.beforeB.afterC.sinceD.if

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科目: 来源:不详 题型:单选题

You will fall behind others _______ you work hard. 
A.untilB.whenC.afterD.unless

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科目: 来源:不详 题型:单选题

She is very happy ______ she has got many good friends.
A.orB.becauseC.unlessD.so

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科目: 来源:不详 题型:单选题

Which do you prefer to use, QQ______E-mail?
A.andB.butC.orD.so

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科目: 来源:不详 题型:单选题

Frank often wears a mask ________he can keep fit in the foggy and hazy (霾) weather.
A.only ifB.untilC.so thatD.even though

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