We can infer from the passage that the author (  ).

We can infer from the passage that the author (  ).A.enjoyed grown-up tricks ver

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The underlined phrase in paragraph 3 most probably means (  

The underlined phrase in paragraph 3 most probably means (  ).A.formed an idea f

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关于无差异曲线特征的说法,正确的有(  )。

关于无差异曲线特征的说法,正确的有(  )。A.无差异曲线从左向右上倾斜 B.离原点越远的无差异曲线,消费者的偏好程度越高 C.任意两条无差异曲线都不能相交 D

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