9BC1练习.docVIP

9B Chapter 1 掌握词语 认知词语 form burn level warm greenhouse mainly vehicle anywhere compare sandwich review lifeless damage 重点词语 be in danger let …in protective layer take in do with plastic items the threats to our habit of doing first of all damage to rain forests throw away gree consumer 形式 燃烧 水平 使暖和 温室 主要地 车辆 任何地方 比较 夹心面包 评论 无生命的 损害 处于危险中 吸收 保护层 吸取 处理 塑料产品 对---威胁 ---的习惯 首先 损坏--- 雨林 扔掉 绿色消费者 consumer threat atmosphere ozone occur spray erosion massive accidentally nitrogen leaded classical director ditch fume vital effect warmth layer protective destruction flooding wrecked mlaria unleaded preference crime bureau exhaust 消费者 威胁 大气 臭氧 出现 喷雾 侵蚀 巨大的 偶然地 氮 含铅的 古典的 局长 沟渠 废气 重要的 效果 温暖 层 保护的 破坏 洪水 失事的 疟疾 无铅的 偏爱 罪行 局，蜀 排除 完形填空 This book says that our world is in danger. It is vital that we do something to save the earth. First of all, what are the threats 1 our environment? The writers ask us to imagine the earth inside a kind of greenhouse 2 the atmosphere around it acting like the glass, 3 sunlight in while keeping much of the 4 from getting out. The atmosphere is essential to all 5 things. Without it, the earth would be as cold and 6 as the surface of the moon. The trouble is that our atmosphere is changing 7 we are polluting it with chemicals -- in the form of gases – and it is keeping in too much heat! These gases, mainly carbon dioxide (C02), are 8 by burning fuels such as petrol. The Greenhouse Effect may cause the level of the sea to 9 and drown cities and even whole countries. The writers tell us that ozone is a gas 10 occurs 20-50 km above the ground. It forms an essential protective layer around the earth. Without it, the sun would burn us 11 . We are making holes in the ozone layer mainly by 12 chemicals called CFCs. We use these in fridges and spray cans, and to make plastic items such as fast food boxes. Many of our habits cause pollution, especially our habit of using things once and then