若函数f（x）= {x−2(x≥0)x+2(x<0) ，则函数f（x）

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若函数f（x）= {x−2(x≥0)x+2(x<0) ，则函数f（x）（）

A：是奇函数不是偶函数

B：是偶函数不是奇函数

C：既不是奇函数也不是偶函数

D：既是奇函数又是偶函数

上一题下一题 0.0难度选择题更新时间:2017-12-15 07:41:47

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C

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There is a saying, “No sports, no life.” Sports are very important to us. Sports help us to stay 1 and get good grades. Everyone in our class 2 sports. Our favourite 3 is PE. We only have PE lessons 4 a week, but we play sports every day. The most popular sport in our class is basketball. The boys enjoy 5 it, and many of the 6 like it, too. Another popular sport is football and there 7 a lot of football fans (球迷) in ourclass. When the weather is 8 , we often play ping-pong outside.We hardly ever (几乎不) play volleyball. We think it's 9. We have a basketball team. Our team often has friendship (友谊) matches (比赛) with teams from other schools. When there is a match, many of us go to 10 it. It's very interesting.

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