题干
晚上睡觉前和妈妈说什么?
A：Good morning, Mum.
B：Good evening, Mum.
C：Good night, Mum.
答案(点此获取答案解析）
C
晚上睡觉前和妈妈说什么?
A：Good morning, Mum.
B：Good evening, Mum.
C：Good night, Mum.
;
若
则
，则下列判断正确的是( )