全新版大学英语第二册UNIT8 Protecting Our Environment教学教材.pptVIP

;Part I Pre-Reading Task  Listen to the recording two or three times and then think over the following questions:  1. What kind of paradise is described in the song? 2. Why do people have to pay to see the trees? 3. What would happen if farmers continued to use DDT? 4. What is the theme of the song? ;The following words in the recording may be new to you: pink a. 粉红色的 boutique n. 时装店 hot spot n. (sl.) nightclub 夜总会 insect n. 昆虫 ;Part II Text A Protecting nature certainly has benefits, but it has costs as well. How are we to balance the two when deciding how far we should go in caring for the environment? SAVING NATURE, BUT ONLY FOR MAN Charles Krauthammer Environmental sensitivity is now as required an attitude in polite society as is, belief in democracy or aversion to nylon. But now that everyone has claims to love Mother Earth, how are we to choose among the dozens of conflicting proposals, restrictions, projects, regulations and laws advanced in the name of the environment? Clearly not everything with an environmental claim is worth doing. How to choose? There is a simple way. First, distinguish between environmental luxuries and environmental necessities. Luxuries are those things it would be nice to have if costless. Necessities are those things we must have;regardless. Then apply a rule. Call it the fundamental principle of sensible environmentalism: Combating ecological change that directly threatens the health and safety of people is an environmental necessity. All else is luxury. For example: preserving the atmosphere, by both protecting the ozone layer and halting the greenhouse effect, is an environmental necessity. In April scientists reported that ozone damage is far worse than previously thought. Ozone reduction not only causes skin cancer and eye cataracts, it also destroys plankton, the beginning of the food chain on top of which we humans sit. ;A non-sentimental environmentalism is one founded on Protagoras principl