I'm sure I'll able to amuse myself for a few hours.

I'm sure I'll able to amuse myself for a few hours.A.treat B.hold C.entertain D.

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斯金纳认为,人和动物的行为有两类:应答性行为和操作性行为。( )

斯金纳认为,人和动物的行为有两类:应答性行为和操作性行为。( )

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“亲其师,信其道”主要表明了( )的作用。

“亲其师,信其道”主要表明了( )的作用。A.道德认识 B.道德情感 C.道德动机 D.道德意志

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You __ practice the drums while the baby is sleeping.

You __ practice the drums while the baby is sleeping.A.needn' t B.mightn' t C.

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What would be the title for the passage?

What would be the title for the passage?A.Taking Risks Is Easier Said than Done

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