题目

直线的倾斜角为 （ ）A. B. C. D. 答案：【答案】D【解析】直线化为，斜率设直线的倾斜角为，则，结合，可得，故选D.--- _______ ways to get on well with your classmates, or you will get yourself very lonely. ---OK, I’ll try my best.A．To findB．FindC．FindingD．Found