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[00:07.00]1 Listen to the tape and fill in the correct information in the spaces below.
[00:15.15]1.Walk along the street of any major city,
[00:21.32]and you will see that the air you breathe is not very fresh.
[00:27.27]Air pollution is a serious problem in many of the world big cities.
[00:33.72]It is caused by cars and factories.
[00:37.98]We also pollute the air when we burn oil or coal for energy and heat.
[00:44.75]2.Oh,my,look at this,dead fish everywhere
[00:51.51]What happened? We used to be able to drink the water in rivers and lakes.
[00:58.46]But today,many rivers and lakes have been so polluted that the water is useless.
[01:05.93]Factories' and drainage1 have been polluting the water.
[01:10.66]We aren't taking good care of water.We use too much water and we waste water.
[01:18.11]What is more we pollute water.
[01:22.18]3.This beautiful mountain is one of the most popular places for people to visite,
[01:30.04]during holidays and festivals.
[01:34.09]Thousands of people come here to hike in the mountains forestes and valleies.
[01:40.57]Unfortunately the tourists leave a lot of rubbish behind,
[01:46.81]plastic bags,soda2 bottles and other things are thrown everywhere.
[01:53.79]Many tourists also pick flowers and demadge the trees.
[01:59.54]And the many hotels in restaurants beening built
[02:04.19]are having a negative affect on the environment,too.
[02:09.36]READING ARE WE ENDANGERED
[02:22.32]Steve Jones is an environmental expert who tries to keep animals and plants
[02:29.58]from becoming endangered.
[02:32.95]"We are not alone in the world.
[02:36.60]We human beings could not survive without all the plants and animals around us.
[02:43.27]We often talk about how important it is to take good care of ourselves and our planet3,
[02:50.03]but we don't always do as we say,"
[02:54.18]Steve says as he takes us on a tour of Green Park in Birmingham.
[03:00.06]Many of the earth's plants and animals have already died out,
[03:05.70]and several other species4 are endangered.
[03:10.07]If we want to live a better life and have a bright future,
[03:15.42]we must learn to act in ways that do not harm other living things.
[03:21.67]If we know more about what causes endangerment,
[03:26.32]we may be able to take measures before it is too late.
[03:31.67]A species can become endangered for different reasons.
[03:36.84]Animals and plants must have a habitat,or home,which is comfortable and clean,
[03:44.39]and where there is enough food and other resources.
[03:49.56]They are all used to their environment;
[03:53.33]that is,they have learnt how to live successfully in their habitat.
[03:59.49]When the habitat of a species is changed or destroyed,
[04:05.13]the animal or plant has to either adapt to the change or find a new home.
[04:12.00]If this is not possible,the species becomes endangered.
[04:17.65]If a new species arrives,the animals and plants of the habitat must change again.
[04:25.22]If the new species is too strong or uses too much of the resources in the hatitat,
[04:32.59]some of the original species may become endangered.
[04:37.73]A species may also die out
[04:41.97]if humans or other animals use too much of a plant or kill too many animals.
[04:49.52]The good news is that there is a lot we can do to help.
[04:55.16]First of all,we need to learn more about animals,plants and the environment.
[05:02.13]Experts tell us that we need to think about what we can do
[05:07.70]to keep animals and plants from becoming endangered.
[05:12.45]Steve says that we can help by creating more space for animals and plants:
[05:19.40]"You can plant a tree or build a birdhouse.It is simple but useful."
[05:25.85]Steve also wants us to think about what we do:
[05:30.42]"Please don't pollute the environment."
[05:34.08]If we find out more about what we should do,
[05:38.83]we can help Steve and others like him keep animals and plants
[05:44.76]and ourselves from becoming endangered.
[05:49.60]INTEGRATING SKILLS
[05:55.84]Reading and writing
[05:59.18]Without air,water and sunlight there would be no living things.
[06:06.92]Because they are so important,
[06:11.17]ecosystems try to be very careful with these valuable resources.
[06:17.73]Human beings often throw away things they have used only once.
[06:24.10]In good ecosystems,resources are used many times.
[06:30.35]The waste of plants and animals will become food for another.
[06:36.30]In fact,nature is much better at recycling than we humans are.
[06:42.96]Maybe we should learn from nature
[06:47.22]and become better recyclers if we throw away too much,
[06:53.88]we may be throwing away our future.
[06:58.56]We all care about nature and the environment,
[07:03.92]but we may not always do everythings we could or should.
[07:09.77]Scientists who know a lot about the environment say that we should
[07:16.14]"Reduce, Reuse,Recycle and Respond".Let's see what that means.
[07:25.00]Words and expressions
[07:31.34]UNIT 10
[07:34.40]fur Tibetan antelope in danger
[07:38.44]n.毛皮；毛；软毛 n.西藏语;藏族人 n.羚羊 在危险中；垂危
[07:42.47]endanger die out as a result of lead
[07:46.94]vt.危害;使受到危险 灭绝；逐渐消失 作为(...的)结果 adj.领头的；领先的
[07:51.41]lead to jungle wolf hippo
[07:55.53]导致某种结果 n.热带丛林 n.狼 n.河马
[07:59.66]kangaroo giraffe Steve Jones environmental
[08:04.19]n.袋鼠 n.长颈鹿 史蒂夫.琼斯(男子名) adj.环境的游
[08:08.72]tour Birmingham species act
[08:13.66]旅行；游历；旅游 n.伯明翰 n.种类 扮演；表现
[08:18.60]endangerment measure take measures habitat
[08:22.92]n.危害 n.尺寸；措施 采取措施 n.生活环境；栖息地
[08:27.25]adapt adapt to original Jemnnifer
[08:31.27]vt.使适应；改编 适应(新环境等) adj.最初的；独特的 詹尼弗(女子名)
[08:35.29]make a difference battery Stevenson devote
[08:39.52]有关系；有影响 n.电池 史蒂文森(男子名) vt.投入于；献身
[08:43.76]devote...to at present common set free
[08:48.03]献身于...专心于... 现在；目前 adj.共同的；普遍的 释放
[08:52.30]in the wild ecosystem valuable throw away
[08:56.32]在自然环境下 n.生态系统 adj.有价值的 扔掉
[09:00.34]reduce respond amount package
[09:04.22]vt.缩减；简化 vi.回答；响应 n.数量 n. 包裹；包
[09:08.10]packaging harmful flat soda
[09:12.12]n.包装材料 adj.有害的；伤害的 adj.平的；平坦的 n.苏打；碳酸水
[09:16.15]material poster attractive topic
[09:20.12]n.材料；原料 n.海报；招贴 adj.有魅力的 n.话题；主题
[09:24.09]organise graph brief
[09:27.05]组织；组织起来 n.图表；曲线图 adj.扼要的
收听单词发音 |
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drainage
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| n.排水系统，下水道，排水，放水 | |
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soda
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| n.苏打水；汽水 | |
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planet
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| n.行星 | |
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species
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| n.物种，种群 | |
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