题目

—My CD player doesn’t work.           —. Maybe I can help you.           A. Of course not           B. Don’t say so           C. Let me have a look           D. I’m afraid not 答案：C已知命题：p：函数f（x）=sinxcosx的最小正周期为π；命题q：函数g(x)=sin(x+π2)的图象关于原点对称，则下列命题中为真命题的是（　　） A、p∧qB、p∨qC、?pD、（?p）∨q