2015-2016学年北师大必修三Unit7Lesson2ProtectingtheSea.ppt

Protecting the Sea ;I am sailing;Discussion;Key words:;What’s the subject of zhi Hong’s science project?;;;What solutions does government do to pollution?;The government tries to the number of that people can catch. They also try to people to get other kinds of .;1.Really?;Fang zhou is asking Zhi Hong about her science project. FZ: Hey, Zhi hong, what did you do for your science project? ZH: I did something about protecting the sea. FZ: Protecting the sea from what? ZH: Well, first, theres pollution. Thats big problem. And second, theres over-fishing.;FZ: Whats over-fishing? ZH: Thats when people fish too much and the number of fish falls too low. Some fish may disappear altogether. FZ: Really? ;ZH: Yes, now there are too many fishermen fishing in the same place. FZ: Do you mean that there are more fishermen now than there were before? ZH: Yes, there are many more. And fishermen today have better technology so they can catch more fish than before. FZ: So there are more fishermen catching more fish? ZH: Well, they hope to catch more fish, but there are less fish to catch, so they simply cant. FZ: Thats bad. ZH: Yes, ;ZH: Yes, and pollution is very bad,too. FZ: What causes pollution? ZH: All sorts: chemicals, plastic, rubbish, oil; most of them come from industrial and agricultural waste. FZ: It sounds like a big problem. ZH: Yes, it is a big problem. FZ: How have these two problems been handled? ZH: Well, some government departments are trying to deal with the situation. FZ: Are they? ;ZH: Yes, some look for ways to reduce pollution, some keep a record of levels of pollution, other departments are responsible for finding where it comes from and punishing people who have broken the law by causing pollution. Of course, often its quite difficult to find whos responsible for pollution. FZ: Yes, I suppose it must be.;FZ: What about over-fishing? What can be done about that? ZH: The government tries to cont