问题
选择题
Would you like _______ after dinner? [ ]
A. walk
B. have a walk
C. to take a walk
D. walking
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Would you like _______ after dinner? [ ]
A. walk
B. have a walk
C. to take a walk
D. walking
答案：C
，则f’(x0)=（）。
