题干
— I am going to Shanghai with my aunt for my holiday after the exam.
— ________.
A：Have a good time.
B：It doesn't matter.
C：You are welcome.
D：Thanks a lot.
答案(点此获取答案解析）
A
是某元素一种粒子的结构示意图，据此推断下列相关说法中合理的是（ ）