0  272732  272740  272746  272750  272756  272758  272762  272768  272770  272776  272782  272786  272788  272792  272798  272800  272806  272810  272812  272816  272818  272822  272824  272826  272827  272828  272830  272831  272832  272834  272836  272840  272842  272846  272848  272852  272858  272860  272866  272870  272872  272876  272882  272888  272890  272896  272900  272902  272908  272912  272918  272926  447090 

5.二项式 的展开式中第9项是常数项,则的值是(  )

A.4      B.8      C.11     D.12  

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4.设袋中有80个红球,20个白球,若从袋中任取10个球,则其中恰有6个红球的概率为(  )

   A.    B.   C.       D.

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3.给出下列关于互不相同的直线和平面的四个命题:

①若,点,则不共面

②若是异面直线, ,且,则

③若,则

④若,则

其中真命题的个数为(  )

A.0      B.1       C.2      D.3  

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2. 若,则等于(   )

    A.     B.     C.    D.以上都不是  

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1.设全集U=R且,则=(  )

A.      B.         C.      D.   

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120. It remains doubtful whether this is an important discovery. ________________.

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119. The book can be of help to whoever wants to do the job. ________________.

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118. Whatever I have now will be yours in the future. _________________.

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117. Whatever you do, you must do it well. _____________________.

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116. I don’t think they will win the game. ___________________.

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