从方框内选择适当的句子补全对话, 其中有两项是多余的。

A: Hello, Jay. May I ask you some questions?

B: Sure!

A: ____

B: I like collecting postcards.

A: ____

B: The pictures on them. I can learn different cultures from them.

A: That's right. Many people like collecting them.

B: ____

A: Yes, I like collecting CDs.

B: Can you tell me why you like it?

A: ____

B: Do you think developing hobbies is important?

A: Yes. ____

B: But we can't spend too much time on it. We should study hard.

A: You're right.

请你用英语描述你同桌的衣着。

This is ……. He/ She……. Her/ His name is……. She/ He is……years old. Look, he's/she's is wearing…….

设x₁，x₂是方程x²+4x+3=0的两根，则x₁+x₂=____ 

阅读下面的文字，完成题目。
         曾经，父母叮嘱孩子的口头禅是：“慢慢走，小心跌跤！”“慢慢吃，小心噎着!”现在，孩子听到最多的是：“快点吃饭！”“快点做作业！”“快点弹琴，快点睡觉！”甚至是：“快点玩！”
        面对父母的转变，请你发表看法，并作简要分析，不少于100字。