题目

已知f(x)在R上是奇函数,且满足f(x+4)=f(x),当x∈(0,2)时, f(x)=,则f(7)=                                    A.3              B.-3            C.1              D.-1 答案:BI felt so bad all day yesterday that I decided this morning I couldn’t face ________ day like that. A.otherB.anotherC.the otherD.others
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