题目

命题“，”的否定是（ ）A.， B.，C.， D.， 答案：【答案】A【解析】根据特称命题的否定为全称命题，可得结果.特称命题的否定是全称命题，注意到要否定结论，故A选项正确，故选：AWhy not ________to Beijing for vacation?A. consider going B. considering going C. consider to do D. to consider go