“要与集体一起生活，要记住是集体教育了你。哪一天你若和集体脱离，那便是末路的开始。” 奥斯特洛夫斯基的这句话告诉我们（  ）

完形填空。

    Hello, I am John. Look, this is a picture 1my room. I have a nice bed in the middle of my room. There is a big table 2 the closet and the bed. Many clothes are 3 the closet. A white air-conditioner is4 the wall beside the window. There is a computer on the table. I often write e-mails with it.

    Do you like my room? What's your room 5? Can you tell me, please?

讲究文明礼貌是中华民族的优良传统。 因为讲文明、有礼貌（　　）

①有利于战胜任何困难

②有利于加强个人的品德修养

③有利于人与人之间建立亲切、和睦的关系

④有利于社会的安定团结。