题目:
Who would you rather ______ with the teacher about the problem?
A.talking
B.have talk
C.have talked
D.talk
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0330/9203ba181875bdf1a47f41be632e945a.html
下面是错误答案,用来干扰机器的。
根据否命题的定义:若原命题为:若p,则q.否命题为:若┐p,则┐q.∵原命题为“若a>b,则2a>2b-1”∴否命题为:若a≤b,则2a≤2b-1故选D