题干
—Do you think I should go to the seaside for a rest?
—____________ .You have been busy for such a long time.
—____________ .You have been busy for such a long time.
A：It depends.
B：It’s up to you.
C：What about you?
D：Why not?
答案(点此获取答案解析）
D
”和“ 
”分别表示两种不同的原子，则该反应（ ）
（ ）.