They are now. [ ]
A. play chess
B. playing the chess
C. play the chess
D. playing chess
答案:D
电梯在运行前电梯司机应做的准备工作有:().
A.外观检查
B.运行检查
C.电源检查
D.门锁检查
孔子曰:“求!周任有言曰:‘陈力就列,不能者止。’危而不持,颠而不扶,则将焉用彼相矣?且尔言过矣,虎兕出于柙,龟玉毁于椟中,是谁之过与?”(《论语•季氏将伐颛臾》)
这段议论采用了什么论证方法?