问题
选择题
It is strange that he _____ so much about me. [ ]
A. has known
B. knew
C. knows
D. should know
答案
答案：D
搜题请搜索小程序“爱下问搜题”
It is strange that he _____ so much about me. [ ]
A. has known
B. knew
C. knows
D. should know
答案：D
则下面四个命题
④ g’(0)存在