模块三shark attacks通篇课文?

模块三shark attacks通篇课文?

There are nearly 400 different types of sharks, but only about 30 types have ever been reported as attacking human beings. Most people know that the most dangerous shark is the great white shark, mainly because they have seen the movie 'Jaws'. However, there are still two other sharks which are fierce. They are the tiger shark and the bull shark. The chances of being attacked by a shark are very small compared to other dangers. Many more people drown in the ocean every year than are bitten by sharks. The low number of attacks that happen every year proves that sharks do not feed on humans if they have the choice. There are three types of shark attacks. The main one is known as a 'hit and run'. The shark attacks because it thinks you are a fish, but when it tastes a human it decides not to eat you. The second type is called a 'bump and bite'. The shark bumps you to find out if you are fit to be eaten and then bites you if it thinks you are. The third type is called a 'sneak'. When attacking in this way, the shark waits for you to swim by and attacks you suddenly. The latter two types of attack are more likely to be deadly for humans. However, your chances of being attacked by a shark can be reduced if you follow the advice below. ? Do not swim in the dark. Sharks can still see you but you cannot see them. ? Do not swim if you are cut or if you have a fresh wound. Sharks can smell blood over a long distance. ? Do not wear bright clothing or jewellery because sharks are attracted to colours and shiny objects. ? Try and stay in groups, as sharks usually avoid large numbers of people. Recently, shark attacks have been increasing as water sports are becoming more popular. If a shark attacks you, try some of the following tips to help you. ? Do not panic. ? Hit the shark on the nose. ? Stick your finger in the shark's eye. Don't be frightened by sharks as there is 30 times greater chance of being hit by lightning than being attacked by a shark.
翻译：世上大约有400种鲨鱼,但据报道只有30种攻击过人类.许多人是因为看了电影“大白鲨”就觉得只有大白鲨才危险,但实际上还有另外2种凶鲨：虎鲨和公牛鲨.被鲨鱼攻击的几率与其他危险相比非常小.每年在海里淹死的人比被鲨鱼咬死的人多.这些每年的渺小的数字表明鲨鱼不以人为食,如果它们有选择的话.
有三种鲨鱼具有攻击性,主要的一种以“撞击后逃跑”闻名.这些鲨鱼攻击是因为它们以为你是鱼,但是当你尝起来像人类是它不会吃你.第二种被叫做：撞击撕咬.这种鲨鱼撞击你想要看你是否适合被吃然后撕咬你如果它认为你适合被吃.第三种被称为“潜行者”,它以这种方式攻击——它等待你有过它然后突然攻击你.后两种很大程度上被认为对人类是致命的.
无论如何,如果你遵从下面的建议,可以减少你被鲨鱼攻击的可能性：不要在黑暗中游泳,鲨鱼可以看见你但是你不能看到它们；在你受伤或有新伤口时不要游泳,鲨鱼可以在长距离闻到血的味道；不要穿鲜艳的颜色的衣服或者珠宝因为鲨鱼会被颜色和有光泽的东西吸引；最好呆在群体中,因为鲨鱼通常不会攻击很多人的群体.
最近,鲨鱼攻击增加因为水上运动变得流行.当一个鲨鱼攻击你时,尝试一下一些方法来帮助你,不要恐慌,攻击鲨鱼的鼻子,用手指刺入鲨鱼的眼睛,不要被鲨鱼吓到因为被闪电打到的概率是被鲨鱼攻击的30倍.