题目

If their new safety system (put) to use, the accident would never havehappened. 答案:【1】had been put函数f(x)有反函数f-1(x),已知f(x)图像经过点(0,1)则f(x+4)的反函数图像必经过点( ) A.(-1,-4)          B.(-4,-1)         C.(0,-5)          D.(-5,0)  
英语 试题推荐