Nowadays many new and useful inventions have come into use. If I were a scientist, I would have my own invention——a magic door, a door that can take me to every part of the world, just like Doraemon's magic door.
Since our life is getting busier and busier, my magic door is really needed. The population of the world is rising day by day，and the number of cars used is getting larger. Therefore，the traffic jam becomes a big problem to people in both poor and developed countries. Moreover，by using a large number of cars，people have to face another problem：the pollution of air. All those reasons lead to the need for such an invention as a magic door. It can take the place of the traditional ways of transportation.
Magic doors have many advantages. Firstly, you can go wherever you want in a minute. Just open the door and go through it，you can stand in another place. Two parts of the door are two parts of the world. Thus, magic doors can meet the need for discovering new places for people. Secondly，magic doors sometimes can even make people safe. Magic doors can be used in everyday life. If you dropped into a river accidentally, for example, people would go there immediately to help you get out of danger by using magic doors.
All in all, people can benefit（得益）a lot from magic doors. If magic doors were invented and came into use widely，not just imagination，there would be a big change in our life！
【小题1】将文中划线句子翻译成汉语。【小题2】写出文中It指代的内容：
【小题3】从短文中找出“People can use magic doors in everyday life. ”的同义句。
【小题4】根据短文内容填入所缺单词使意思完整，每空2个单词。
If you dropped into a river
【小题5】列举2条magic doors的好处。
【小题6】给短文拟一个标题：
