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大学英语四级

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【C8】A.whichB.whatC.thatD.where

【C7】A.On the other handB.On the wholeC.All in allD.In brief

【C3】A.advantageB.convenienceC.benefitD.interest

【C2】A.inB.atC.onD.for

A.In a hospitalB.In Joan' s officeC.In Mr. Sherwin's officeD.At home

听力原文:W: Uh' "excuse me, Mr. Sherwin, but I was wondering if I could speak to you for a

听力原文:M: Well, how' s the patient this morning?W: He appears to have had a very restles

The pH of polluted rainwater ranges from about 6 to just belowA.YB.NC.NG

As for air quality indoors, Australians suffer a higher concentration of pollutants than p

Photochemical smog is formed on rainy days when chemicals are combined with smoke.A.YB.NC.

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