问题
选择题
— ____________?
— No, thanks.[ ]
A. What's this?
B. How are you?
C. Would you like some soup?
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— ____________?
— No, thanks.[ ]
A. What's this?
B. How are you?
C. Would you like some soup?
答案：C
缺失时，为了在模型上建立正确的关系，应采用哪种方法（）
托记录垂直距离