题目

设函数f(x)=若f(x0)>1,则x0的取值范围是(   )A.(-∞,0)∪(2,+∞)                        B.(0,2)C.(-∞,-1)∪(3,+∞)                      D.(-1,3) 答案：C解析:当x0∈［2,+∞)时,由f(x0)=>1,得x0>3.当x0∈(-∞,-2)时,由f(x0)=-1>1,得x0<-1.所以x0∈(-∞,-1)∪(3,+∞).11、 (2011年绵阳三诊)—Amazing！You________wear slippers at work. —Don’t you know it’s a fashion? A．must                     B．should C．can                       D．may