Ithasbeenprovedseveralnewkinds

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It has been proved ____ several new kinds of medicine____ a positive effect on the cure of H7N9.

A．which，has	B．if, has
C．that, have	D．what, have

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Don’t you think that______________ is no use promising without doing?

A．this

B．that

C．it

D．what

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Is this the girl______ whom I can turn for help? Is she good at this subject?

A．to

B．with

C．in

D．at

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_______ our food running out, we had to walk to a village for help.

A．Since

B．Because

C．With

D．For

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— Didn’t you enjoy the performance last night?
— ___________. It was less wonderful than expected.

A．Yes, I did

B．No, I didn’t

C．Yes, I didn’t

D．No, I did

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It was ______ that they all went swimming in the river.

A．such a hot weather	B．such hot weather
C．so hot weather	D．so hot a weather

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