阅读下面文章，然后从文后所给的A-D四个选项中选择正确的小标题，将其序号填入①—④题，并回答（2）题。

    When you are travelling by plane, there are some passengers you just don't want to have next to you.

      ①  

    Perhaps you normally like them , but when you are sitting next to them on a plane it is a different thing. They usually spend all flight moving around and dropping their toys on the floor, and when they are drinking their orange juice ,it ends up on your trousers. Then they decide they want to play with you. So you can't have the little sleep.

      ② 

     You can realize this type as soon as you sit down. They immediately start talking about the plane , or the weather, or they ask you a personal question. It is very difficult not to talk to these people . You'll probably have to keep talking until the plane landed.

      ③  

    These are the people with white faces who sit down and immediately ask for something to drink. Every five minutes they call a flight attendant(服务生)to ask if there are any problems with the plane. They also tell you about air accident. The best thing to do is to pretend to sleep.

       ④    

    These people are not necessarily very big. But they have a terrible habit of taking up all their room, and some of your room too. They usually sit with their arms and legs in your space.