题目

Equal treatment for all is guaranteed in this area，______ race，religion or sex．  A. in need of    B．in spite of    C．regardless of  D．in terms of 答案：C16．在平面直角坐标系xOy中，若曲线y=lnx在x=e（e为自然对数的底数）处的切线与直线ax-y+3=0垂直，则实数a的值为-e．