Scientistsanddoctorsacrossthew

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Scientists and doctors across the world have done _____ research over the years, hoping to find a cure for cancer.

A．a great deal of	B．quantity of
C．quite a few	D．a large number of

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—I__________some photos to be developed (冲洗). Are they ready yet?
—Yes. Here you are.

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B．as though

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Mike seldom asks ____ questions in class, but today he raised _____ fairly good one.

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