Risingevidencesuggeststhattheu

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Rising evidence suggests that the use of the vaccines(疫苗)will be effective to the spread of common cold.

A．interrupt

B．threaten

C．contribute

D．abandon

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相关试题

At minus 130℃, a living cell can be _________ for a thousand year.

A．spared	B．protected
C．preserved	D．developed

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Earth is believed ______ by an object the size of Mars at some point in the distant past before itssurface cooled.

A．to be hit	B．to have hit
C．to have been hit	D．to hit

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our earth, or else it will be no longer fit for us to live on.

A．Protected	B．To protect
C．Protecting	D．Protect

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With temperature ______ so rapidly, we could not go with the experiment.

A．fall	B．falling
C．fallen	D．to fall

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They've won their last three matches, I find a bit surprising.

A．which

B．that

C．when

D．what

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