[au:]C部分 1a 阅读理解
[02:49.32]traffic pollution
[au:]交通污染
[02:53.38]fewer trees
[au:]较少的树
[02:56.24]factory pollution
[au:]工厂污染
[03:00.02]the ozone layer
[au:]臭氧层
[03:03.62]more carbon dioxide
[au:]更多的二氧化碳
[03:07.50]The earth is 4 600 million years old.
[au:]地球存在46亿年了。
[03:13.43]We humans have lived on the earth for only 35 000 years, but during this period we have changed our planet a lot in many ways.
[au:]人类在地球上仅仅生活了3万5千年,但是在这期间我们以很多方式改变着地球。
[03:24.55]Some things we've done are very good for the earth while some are bad.
[au:]对地球来说,我们做的事情中有些是好事,有些并不好。
[03:30.94]All over the world, people have cut down millions of trees.
[au:]全世界不计其数的树木被人类砍掉了。
[03:36.98]When it rains or when the wind blows, the earth is taken away.
[au:]下雨或刮风的时候,水土就会流失。
[03:43.46]Forests have become desert, so more and more sorts of animals and plants are disappearing.
[au:]森林变成了荒漠,越来越多的动植物正在消失。
[03:52.26]In big cities, cars and buses have polluted the air.
[au:]在大城市里,小汽车和公共汽车已经污染了大气。
[03:58.37]Now many people in cities have health problems.
[au:]现在城市里很多人存在健康问题。
[04:03.73]Factories have also polluted the land and the water.
[au:]工厂既污染土地,又污染水。
[04:09.19]As a result, many rivers and lakes are now dead.
[au:]结果,很多河流和湖泊现在都成了死河、死湖。
[04:15.21]Around the earth, there's a special kind of oxygen called "ozone". It is important to the earth.
[au:]地球的周围有一种特别的氧气叫做“臭氧”。臭氧对地球很重要。
[04:25.81]But now air pollution is destroying it and that has made a very big hole in the ozone layer.
[au:]但现在空气污染正在破坏臭氧,它已经使臭氧层出现了一个非常大的空洞。
[04:34.76]Too much harmful radiation from the sun passes through the hole and reaches the earth directly.
[au:]现在大量的有害太阳射线穿透这个空洞,直接进入地球大气层。
[04:43.37]This is very dangerous because this kind of radiation can cause cancer.
[au:]这是非常危险的,因为这种射线能致癌。
[04:50.78]Carbon dioxide in the air has increased a lot.
[au:]空气中的二氧化碳大量增多。
[au:]二氧化碳主要来自燃烧的油,煤以及木材。它在地球周围形成毯子似的覆盖层。
[05:06.06]The heat from the sun can't escape so the temperature is rising.
[au:]来自太阳的热量不能散发,所以气温升高。
[05:12.45]This is called "the greenhouse effect".
[au:]这就是所谓的“温室效应”。
[05:16.61]It causes the level of the ocean to rise and the climate of the earth to change.
[au:]它会引起海平面升高而且地球上的气候也会有变化。
[05:23.83]All these problems are very serious, so we must do something now.
[au:]这些问题都很严重,所以我们现在必须做些事情(来保护我们的家园)。
[05:31.33]Section D 1a Work alone
[au:]D 部分 1a 个人工作
[05:41.99]Listen to the tape and fill in the blanks.
[au:]听一听带子,填空。
[05:47.08]People in Britain produce about 430 million tons of waste every year,
[au:]英国的人们每年可制造4.3亿吨的垃圾,
[05:55.32]and put about 85 percent of waste into the land.
[au:]并且将百分之85的垃圾扔到地上。
[06:01.06]This harms the environment and takes up a lot of space.
[au:]这破坏环境并且占用很多的空间。
[06:06.89]It's difficult to find new land to put the garbage in.
[au:]现在很难找到新的地方去堆放垃圾。
[06:12.53]At the same time, dealing with the waste cost too much money.
[au:]同时,废物处理需要大量的财力。
[06:19.32]Every year, people in Hong Kong produce about 5 million tons of waste.
[au:]每年,香港的人制造出5百万吨的废物。
[06:26.54]Of all the garbage, about 35 percent can be recycle while the rest can't.
[au:]这些所有的垃圾,只有百分之35可以再利用,剩下的不行。
[06:34.32]The garbage produced every day has become a serious problem around the world. How shall we deal with it?
[au:]每天产生的垃圾现在已经是世界上一个很严重的问题。我们应该怎么解决?
[06:44.27]2a Grammar focus
[au:]2a 语法重点
[06:52.94]Indefinite pronoun and adverb
[au:]不定代词和副词
[06:57.94]None of us likes pollution.
[au:]没人喜欢污染。
[07:02.29]Don't spit anywhere in public.
[au:]不要在公共场合随地吐痰。
[07:06.44]Everyone should care for wild animals and plant more trees.
[au:]人人都应该保护野生动物并且种更多的树。
[07:12.46]We should do everything we can to protect the environment.
[au:]我们应尽一切努力保护环境。
[07:19.13]2b Useful expressions
[au:]2b 日常用语
[07:26.81]As a result, air pollution has become a serious problem.
[au:]结果,大气污染已经成为一个严重的问题。
[07:33.57]Humans have come to realize the importance of protecting animals.
[au:]人类已经认识到了保护动物的重要性。
[07:40.05]Trees can stop the wind from blowing the earth away.
[au:]树木能防风固土。
[07:45.51]3 Class activity Read and enjoy
[au:]3 班级活动 阅读欣赏
[07:54.78]TREES
[au:]树
[07:58.56]We need the trees for shelter,
[au:]我们需要树来乘凉
[08:03.28]We need a place to stay.
[au:]我们需要地方去呆
[08:09.20]Somewhere to raise our children,
[au:]我们孩子在某些地方长大,
[08:14.38]Somewhere to hide away.
[au:]孩子在某些地方躲藏。
[08:19.84]You want the trees for paper,
[au:]你需要树木造纸,
[08:24.83]You want it every day.
[au:]你每天都需要
[08:30.76]You use it just a little,
[au:]你仅仅用一点点
[08:35.84]And then throw it all away.
[au:]然后扔掉
[08:40.56]We need the trees to feed us.
[au:]我们需要树木养育自己
[08:45.09]We need them to survive.
[au:]我们需要它生存
[08:50.73]They have all the fruits and leaves.
[au:]它们可以生产果子和叶子
[08:54.89]We need to stay alive.
[au:]我们需要保持生机
[08:57.84]You want the trees for timber,
[au:]你需要树木作为木材
[09:02.74]You want the wood to build,
[au:]你想用木材建家,
[09:07.46]But logging is the reason,
[au:]但是树木才是原因,
[09:10.96]A lot of us are killed.
[au:]我们都是在自杀。