___________To make revising easier, leave wide margins and extra space between l

___________To make revising easier, leave wide margins and extra space between lines so that you can

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自然失业率( )。

自然失业率( )。A. 恒为零B. 依赖于价格水平C. 经济处于潜在产出水平时的失业率D. 是没有摩擦性失业时的失业率

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Not only ______ study well,but also he is always ready to help others.

Not only ______ study well,but also he is always ready to help others.A. he doesB. he didC. does heD.

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We can infer from the third paragraph that . rich people are more interested in

We can infer from the third paragraph that .[A] rich people are more interested in cloning humans tha

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Strange______ his behavior. may be, there is a very good reason for it.

Strange______ his behavior. may be, there is a very good reason for it.A. althoughB. even ifC. as D.

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