( ) He gave no opinion about the matter because he didn't wa

( ) He gave no opinion about the matter because he didn't want torisk__________i

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Even a child knows that nodding (点头 ) the head means "Yes".

Even a child knows that nodding (点头 ) the head means "Yes". But some peoplewillp

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第30题应填入( )

第30题应填入( )A.Seeing doctors B.Shopping C.Travelling D.Going to the cinema

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( )If a better material__________, the strength of the part

( )If a better material__________, the strength of the part would have been incr

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若直线l沿x轴负方向平移3个单位,再沿y轴正方向平移1个单位后,又回到原来的位置,那么直线l的斜率是

若直线l沿x轴负方向平移3个单位,再沿y轴正方向平移1个单位后,又回到原来的位置,那么直线l的斜率是 A.-1/3 B.一3 C.1/3 D.3

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