已知3xy，则x和y（）A.成正比例B.成反比例C.不成比例

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已知3x=y，则x和y（　　）
A.成正比例 B.成反比例 C.不成比例

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Ken was so busy when we saw him, because he _______ a speech the next day.

A．will make	B．would make
C．has made	D．was making

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--- What did he tell you just now?--- He said that ____________ tomorrow morning.

A．he will buy some books.

B．will he buy some books.

C．he would buy some books.

D．would he buy some books.

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By the time Dave reached the small boat, a thick white fog _______ over the surface of the water.

A．spread	B．has spread
C．had spread	D．was spreading

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The teacher told the kids that light ________ faster than sound.

A．traveled	B．had traveled
C．is traveling	D．travels

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He said that his car ______ stolen and he _______ have to telephone the police.

A．was; would	B．has been; will
C．had been; would	D．had been; will

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