下列反射活动中，属于通过长期生活经验积累而形成的是（　　）

某学校团委准备在全校开展一次以“校园暴力”为主题的教育活动，假若你是该校的一名学生，请你参与其中，展开讨论。

Peter: Let's play computer games!
Barry: That sounds interesting, but I don't have a computer.
Peter: Well, do you have a volleyball?
Barry: Yes.
Peter: Then let's play volleyball.
Barry: Oh, volleyball is so difficult.
Peter: OK, let's watch TV.
Barry: That sounds boring. Hmmm, let's play soccer! Do you have a soccer ball?
Peter: No, I don't.
Barry: Oh, well, do you have a basketball?
Peter: Yes, I do. Let's play basketball!
Barry: That sounds fun!

命题“$\forall x^2>1,x>1$” 的否定是(  )