u7b3.ppt

II. Basic listening practice satellite: 卫星 ~ television Planet: 行星 high-powered: 高性能的 scope: 范围、领域 microscope 显微镜 microwave, microphone, Microsoft El Nino current: adj. present ~affairs n. flow of water or air in one direction 水流、气流 drought: ~ is a kind of natural disaster. mysterious: adj. 神秘的 mystery: n. 奥秘 D 1 El Nino 正常年份: 南美洲西海岸有一条冷洋流(秘鲁洋流)环绕着.在东太平洋上空存在着一个反气旋(即高气压区域),热带信风于是在太平洋从东向西吹. 厄尔尼诺现象: 有时反气旋向西太平洋移动, 从而导致信风由西向东吹, 并推动海水上层的暖洋流覆盖秘鲁冷洋流, 使后者温度猛升3-6度, 气候异常. acid: ~ rain ~ soil Lemon is an acid fruit. Vinegar has an acid taste. Sour: This apple is really sour! The milk is turned sour. ~~Yogurt Positive - negative greenhouse effect: 温室效应 holes in the ozone layer:臭氧层空洞 harness: v.control and use (a natural force) e.g. harness the sun’s rays as a source of energy. install: v. 安装 I’m having a solar roof installed. D 2 the Gobi Desert: 戈壁沙漠 edge: 边 border Plant- barrier: n. 障碍，阻碍，屏障 Language barrier Wind barriers D 3 refrigerator (fridge) : 冰箱 CFC hazard: n. danger, risk Wet roads are a ~ to drivers. Smoking is a serious health hazard. dispose (of) : get rid of sb/sth that one does not want or cannot keep 处理，去除，舍弃 He was forced to dispose of his treasures. in the case of :就~来说 upgrade: 升级 improve Electrical appliances 家用电器 remove: 拿走 D 4 aerosol spray: 喷雾器 hair/fly/throat spray build a bomb: set fire：放火 Cool it: (slang) calm down 冷静、放松 Shrink (shrank, shrunk; shrunk, shrunk): become smaller 缩小，收缩 e.g. The hot water shrunk my shirt. Panic: fear D 5 III. Listening InTask 1. We should have proper respect for nature Cigarette butt: 烟蒂 Garbage bin= dustbin= rubbish bin= trash can 垃圾箱 Litter: leave rubbish in public places Fine: v. 罚款 Task 2. The smaller hole in the ozone layer Antarctica:南极洲 Antarctic: adj. 南极的 Antarctic Circle: 南极圈 Arctic adj.： 北极的 Arctic Circle: 北极圈 Radiation: n. 辐射 radiate: v. 散发，发热 Radio. 无线电广播 Radius: n. 半径 Recovery n. 恢复，复原 Restriction: n.限制 ,约束 Impose/place/remove/lift ~ on restrict: v. ~ sth to I am