西塞罗说:“懂得生命真谛的人，可以使短促的生命延长。”这是因为（   ）

    Home Alone is a very funny 1990 American film. It tells us a boy who is left at home alone by accident.

    One night before Christmas, McAlister family meet at their house. They are planning to fly to Paris for the holiday and are busy getting ready. Eight-year-old Kevin is the youngest child and he is fighting with his brothers, sisters and cousins. When he goes to bed, he is so angry that he wishes all his family would go away. In the morning, everyone wakes up very late. They are all in hurry to get to the airport, so they forget Kevin and he is left alone at home.

    Although Kevin is alone, he is very happy at first. His terrible family have gone---his wish has come true. He watches TV, eats lots of fast food and play games. He has a good time. But later on, he goes out and hears two bad men called Harry and Lary. Many things in the house get broken as Kevin tries to stop them. Finally, the police come and the men are taken away.

    The house is now in a mess, so Kevin tidies it up and waits for his parents. They get back from Paris and are very happy to find that Kevin is safe.

①加强自我防范，学会自我保护

②明辨是非，谨慎交友

③远离网络，躲避干扰

④可以告之，广交朋友

参照课文注释,翻译下列句子。