Someresearcheshaveprovedthatwa

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Some researches have proved that water quality ____ due to too many dams and pumps in some areas.

A．has been declined	B．is being declined
C．is declining	D．had been declining

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. He wanted to make sure __________.

A．how we went there by bus	B．where did we go
C．what did we go there	D．when we went there

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---- ________
---- Thank you. I certainly will.

A．Remember me to your family

B．What can I do for you?

C．I greatly appreciate our friendship.

D．I wish you succeed.

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It is the prevention of disease ________ its successful treatments that has led to the rapid increase of the world’s population.

A．rather than	B．other than
C．more than	D．less than

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Nobody would like _________ because of their appearance.

A．to be laughed at	B．to laugh at
C．to laughing at	D．to be laughing at

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Why is________ you are so late for the class?

A．it that	B．that it
C．it	D．that

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