Where _______ for the past few years?

A.a(chǎn)re youB.have you beenC.have you goneD.did you go

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It has not been decided when and where _______ for a picnic.?

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  This is the plane _______ he went to Shanghai ______ business.

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It has not been decided when and where _______ for a picnic.?

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科目:高中英語 來源:陜西省五校2010屆高三下學(xué)期第一次模擬考試試題(英語) 題型:閱讀理解


Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer.
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The study follows reports of cases where, for example, a dog showed great interest in a growth on the leg of its owner.The man was later found to be skin cancer.Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients, from people with other diseases and from healthy people.Each dog was tested 8 times.In each test there were 7 samples for the dogs to smell.The dog should signal the one from a bladder cancer patient by lying down next to it.Two cocker dogs were correct 56 percent of the time.But the scientists reported an average success rate of 41 percent.The British Medical Journal published the research.In all, 36 bladder cancer patients and 108 other people took part.During training, all the dogs reportedly even identified(認(rèn)出)a cancer in a person who had tested healthy before the study.Doctors found a growth on the person’s right kidney(腎).Carolyn Willis says dogs could help scientists identify the combined chemicals produced by bladder cancer.That information could then be used to develop machines to test for the chemicals.The team also plans to use dogs to help identify markers for other kinds of cancer.
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A.Dogs have a good sense of smell        B.Dogs can help cure cancer
C.Dogs can smell cancer                 D.Dogs help perform experiments
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A.often have urine with unusual smell                       B.probably smoke cigarettes in their life
C.can easily make dogs lie down                    
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A.Dogs can only smell bladder cancer.
B.Dogs have a good knowledge of cancer.
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科目:高中英語 來源:2015屆遼寧盤錦市高一第一次階段考試英語試卷(解析版) 題型:單項(xiàng)填空

Where _______ for the past few years?

A.a(chǎn)re you

B.have you been

C.have you gone

D.did you go

 

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