将下列动物的行为进行分类，用直线连接起来．

1两只狗为争夺骨头而发生争斗____           A取食行为

2乌鸦吃螺蛳____                            B攻击行为

3蝴蝶交易____                            C防御行为

4狗撒尿做标记____                         D领域行为

5乌贼喷出“墨汁”____                    E繁殖行为

6蜜蜂的蜂群____                        F节律行为

7鸬鹚的迁徙行为____                      G社群行为

Good morning, class!
    We know that there are too many net bars around us. The Internet is popular and it makes our lives colorful. Many of us like going online very much because we can learn how to use the computer and get more information from the Internet. We can learn English. We can read some good newspapers and magazines. It can make us clever in playing computer games. We can send E-mails to our friends quickly. We can chat(聊天) freely online with our friends. It can help us get in touch with people from all over the world.
    But some students spend too much time in playing computer game and some stay in the net bars all day and all night. Teenagers even get to have boyfriends or girlfriends online. They write too many letters to each other. It takes them too much time to chat online so they do worse and worse in their lessons and they don't study well any more. I think we mustn't get online when it is time for us to study. We can do it in summer or winter holidays. We should get online with adults(成人)--our teacher or parents.
    At the same time, if we have lots of free time, we can do some out-of-class activities at school. We usually have activities from 4:50 to 5:50 in the afternoon. We have different kinds of activities. If you are interested in sports, you can play basketball or football. We can go to the English Corner. We can practice talking in English there. We hope we can spend more time on our subjects or on such activities that we can learn a lot from and less time on the Internet.
    Thank you for listening to me. That's all.

 Different countries have different customs. When you are in different countries, you should follow their customs.

 In China, it`s impolite to talk when eating dinner. And you`re not supposed to start eating first if there are older people at the table.

Very often people who travel to the United States forget to tip(付小费). It is usual to tip waiters, taxi drivers and porters who help carry your bags. Waiters expect to get a 15% tip on the cost of your meal. Taxi drivers expect about the same amount.

 In England, make sure to stand in line even if there are only two of you. It`s important to respect(尊重) lines there. It`s a good idea to talk about the weather. It`s favorite subject of conversation with the British.

 In Spain(西班牙)，it`s a good idea to have a light meal in the afternoon if someone invites you for dinner. People have dinner very late ,and restaurants do not generally open until after 9:00 pm.

 In Saudi Arabia(沙特阿拉伯)，men kiss one another on the cheek(脸颊).Your  host may welcome you with a kiss on both cheeks. It is polite for you to do the same.

 In Japan, people usually give personal or business cards to each other when they meet for the first time. When a person gives you a card, don`t put it into your pocket(口袋) as soon as you get it. The person expects you to read it.

 Don`t forget to be careful of your body language to express something in conversations. A kind of body language that is acceptable in one culture may be impolite in another.