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【简答题】
所有n阶排列中,奇排列有 个.
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【单选题】We learn from the passage about Koch Industries that ______.
A.
it signed contracts with others only on two issues
B.
it believes markets can totally replace other forecasting techniques
C.
its business includes goods trading, pesticide, fertilizers and chemical
D.
it has applied prediction for less than a year
【单选题】We can infer from the lastparagraph that_______．
A.
employees hate distancebetween each other
B.
there should be nodistance between employers and employees
C.
the disappearance ofdistance improves efficiency
D.
telecommuting changes waysof communication
【单选题】The task is very difficult. I wonder whether we will be able to finish it in the ________ of any other helpers.
A.
appearance
B.
escape
C.
spare
D.
absence
【简答题】Since style. and color are a matter of (person) ______ taste, we can not easily remark others' clothes as good or bad.
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