No senator spoke at the convention unless he or she was a Democrat. No Democrat both spoke at the convention and was a senator.
Which one of the following conclusions can be correctly drawn from the statements above?
-
ANo one but senators spoke at the convention
分析该选项
-
BNo Democrat spoke at the convention
分析该选项
-
COnly Democrats spoke at the convention
分析该选项
-
DNo senator spoke at the convention
分析该选项
-
ESome Democrat senators spoke at the convention
分析该选项
显示答案
正确答案: D