Howmanymoredecadeswillhavetopa

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How many more decades will have to pass ____ scientists succeed in providing a cure for cancer?

A．when

B．since

C．before

D．until

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They finally reached________ they had long dreamed of.

A．where

B．the place

C．that

D．there where

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If you sleep short of 7 hours, you are three times________ to catch a cold.

A．possible

B．certainly

C．probable

D．likely

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—It’s so nice to enjoy the sunshine here on the green grass.
—You________us a right place.

A．had introduced

B．are introducing

C．have introduced

D．introduce

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—Is your school bigger than ours?
—Yes. I guess it is________your school.

A．as twice the size of	B．as two thirds big as
C．bigger than half	D．one third bigger than

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The disease, ________, could spread very fast.

A．unless well controlling	B．if not well controlled
C．when not to control	D．although not being well controlled

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