(
课件网) Unit 13 We're trying to save the earth! Section A1 (1a-2d) What's wrong with the earth The earth is polluted. Pollution is anything that makes the earth unhealthy and dirty. Air pollution. Water pollution. Soil (Land) pollution. Noise pollution. Air pollution. Smoke makes air dirty. from cars (burn fossil fuel(化石燃料)-- oil) industrial chemicals (release industrial smoke and dangerous gases) wildfires (burn wood or fossil fuel -- coal) volcanoes Water pollution. the worst and most dangerous form of pollution Dirty particles substances(有毒颗粒物质) or chemicals are into the water bodies. others leaked oil (石油泄漏) some substances used by farmers to kill pests or weeds seep into(渗入) the ground Soil (Land) pollution. Destruction of the earth's land surfaces radioactive pollutants (放射性污染物)— from nuclear reactors(核反应堆), hospitals, explosions(爆炸) ... solid waste chemicals — chemical fertilizers(化肥)，insecticides(杀虫剂), pesticides(农药), industrial wastes(工业废料) ... Noise pollution. the sounds get too loud and lasts too long Natural events— heavy rains, animal roaring, earthquake, fast wind and volcano eruption ... Transportation—airplanes, helicopters and vehicles Household sources — food mixer grinder, vacuum cleaners, washing machine and music systems... Social events — disco, parties... Industrial activities — big industries, printing presses, and construction sites... litter e.g. The floor was littered with papers. 地板上乱七八糟扔了许多报纸。 He was arrested for littering. 他因乱扔垃圾被拘留。 There will be fines for people who drop litter. 乱扔垃圾的人将被罚款。 v. 乱扔 n. 垃圾；废弃物 bottom e.g. I waited for them at the bottom of the hill. 我在山脚下等候他们。 n. 底部；最下部 fisherman e.g. There were no more fish for fishermen to catch. 渔夫们再也抓不到鱼了。 n. 渔民；钓鱼的人 coal e.g. A hot coal fell out of the fire and burnt the carpet. 一块燃烧着的煤块从火炉里掉出来把地毯烧了。 n. 煤；煤块 ugly e.g. It is turning beautiful places into ugly ones to drop litter. 乱扔垃圾正在把美丽的地方变成丑陋的地方。 adj. 丑陋的；难看的 advantage e.g. There are many advantages of bike riding. 骑自行车有很多优点。 n. 优点；有利条件 cost e.g. It's good for health and it doesn't cost anything! 它对健康有益，而且不需要任何费用！ v. 花费 n. 花费；价钱 wooden e.g. I never take wooden chopsticks or plastic forks when I buy takeaway food. 我买外卖时从不带木筷子或塑料叉子。 adj. 木制的；木头的 plastic adj. 塑料的 n. 塑料；塑胶 takeaway n. 外卖食物 bin n. 垃圾箱 e.g. Throw rubbish in the bins. 把垃圾扔到垃圾桶里。 1a Here are some words related to different kinds of pollution. P97 loud music cars rubbish planes littering ships factories smoking building houses mobile phones Write them in the box below. Then add more words. P97 loud music cars rubbish planes littering ships factories smoking building houses mobile phones air pollution _____ _____ _____ _____ _____ noise ... ...
