高中英语人教版2000年高一上10

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[00:00.00]和谐英语学习网 Unit 10              The world around us  LISTENING
[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 drainage 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,soda 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 planet,
[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 species 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.