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式子(1+x)2011=a+a1x+…+a2011x2011,则a+a2+a4…...
式子(1+x)2011=a+a1x+…+a2011x2011,则a+a2+a4…+a2010的值是( )
A.22010
B.0
C.22011
D.2
考点分析:
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