【正文】 me people throw away paper, cigarette butts, empty cans or even batteries in public places.PollutionWhen households and factories dump sewerage and harmful substances into rivers and lakes, water pollution can be serious. Air pollution may worsen as the economy develops. If the smoke from factory chimneys does not meet environmental standards, it pollutes the air. Also, the increasing number of cars brings further deterioration to the quality of the air. The cigarettes people smoke also contribute to the pollution.2. Can you think of some measures to protect forests?I think the most important thing to do is to create a law to forbid the cutting of trees in certain areas. Even when timber is needed for construction, logging should be well planned. In addition to the law, we also need law enforcement personnel who will fine those who fell trees illegally.It is not enough to protect the existing forests. We must also plant trees to make new forests. We should also grow various types of trees to ensure biodiversity. To make the a forestation program successful, the government should award those units and individuals that have made outstanding contributions.Unit 8 College English Teaching and LearningModel 1 A: Do you have any trouble with English learning?B: Yes. Um…, you know, I have spent lots of time on vocabulary and grammar this term, but I still have some trouble with English, especially listening and speaking. Can you give me some advice?A: I think one of the most important keys to learning English well is to establish a regular study program, like sparing a few minutes every morning around breakfast time, reading aloud or listening to BBC or VOA. If possible, try your best to use what you’ve learned. B: Thank you.Model 2 A: Do you know something about autonomous learning?B: Sure. autonomous learning is extremely beneficial for language learners. It prepares students for easier step into adulthood. The concept of allowing students to plan and negotiate the content of the lessons makes them more interesting for the students and it is a significant factor which influence the increase of students’ motivation. They can have access to a large range of knowledge by surfing the net. You know, I like doing autonomous learning in my spare time. I can go freely to what I am interested in. I often practice listening on the net as scheduled and download some news items from VOA or BBC. I like listening to English news with my the help of puter network, my English is improving, especially listening and speaking. So autonomous learning is indeed a good way to improve English.A: That’s right. Model 3A: Do you know CALL?B: CALL means puterassisted language learning. With CALL, English teaching and learning will bee more interesting than before. And the students have more opportunities to get access to more knowledge and practice English in class. Besides, the students can learn perfect English by video watching. So, CALL is quite different from the traditional language teaching and learning, which is teacheroriented..Model 4 A: What do you think of your English teacher?B: My English teacher is one of the best professors for the course. Maybe you’ve never met such a helpful and patient teacher before. He knows his students well and gives useful advice on how to improve listening and speaking. Besides, he likes to ask the students to do roleplay or some oral presentations during the classes. I think it is a good way to improve speaking and listening. His lectures are always interesting. He speaks perfect English, too. 8 /