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已知函数f(x+)为奇函数,设g(x)=f(x)+1,则g()+g()+g()+g+…+g()=
1005
2010
2011
4020
已知函数f(x)(xR)为奇函数, f(2)="1," f(x+2)=f(x)+f(2),则f(3)等于( )
A. B.1 C. D.2
A.5 B. C.-5 D.