上海牛津初中英语八年级下--CHAPTER 2 Reading POLL

CHAPTER TWO  Reading POLLUTUO FIGHTERS

[00:09.90]Judy is collecting some facts for a class project on pollution.

[00:18.44]She is interviewing Doctor Ray,a scientist,about trees.

[00:27.51]Judy:Why are you so interested in trees,Doctor Ray?

[00:38.16]Dr ray:They're the biggest and oldest living things on earth,Judy.

[00:45.71]JUDY:Yes,but what good are trees?

[00:51.67]They make streets more beautiful and less noisy,but what else can they do?

[01:02.25]Dr ray:Well,there's wood in your pencil and the bench,

[01:08.78]rubber on the end of your pencil,

[01:12.91]and paper in your notebook—all from trees.

[01:19.39]do you like to eat an orange,or sip 1 a Coke or a coffee?

[01:28.03]Judy:Sometimes.

[01:31.90]Dr ray:Well,the fruit,the nuts for the Coke,

[01:37.36]and the beans for the coffee all come from trees.

[01:43.42]And,I suppose you also enjoy breathing pure,cool air.

[01:50.68]Judy:Of course.

[01:54.94]Dr ray:Then you must thank trees for that,too.

[02:00.58]Trees are natural air conditioners.

[02:06.04]They take harmful gas from the air,and release 2 oxygen into the air.

[02:14.22]How many people are there in your class,Judy?

[02:20.15]Judy:Forty-six.

[02:24.98]Dr ray:Well,one and a half hectares 3 of trees

[02:31.33]could produce enough oxygen to keep your whole class alive and healthy for a year.

[02:40.39]Judy:That's wonderful!

[02:44.94]DR ray:Trees cool the air as well as clean it.

[02:50.87]Three trees can do the job of 15 air conditioners running almost all day.

[02:59.83]Judy:You certainly know a lot about trees Doctor Ray.

[03:06.10]DR ray:Thank you,Judy,but I don't,really.

[03:12.34]Scientists are only now beginning to understand them.

[03:18.22]For example,did you know that when insects attack a tree,

[03:25.27]it can warn 4 its neighbours?

[03:29.74]The trees can then protect themselves by producing a chemical

[03:35.30]that makes their leaves taste nasty 5.

[03:40.16]And some trees can join their roots together underground,

[03:46.82]and pass food and water around.

[03:51.68]Trees are communicating with one another, but we don't know how.

[04:00.04]Judy:Are trees in danger?

[04:05.00]Dr ray:In great danger.

[04:08.56]We cut down and burn millions every year but we replace hardly any of them.

[04:17.31]We are destroying our best fighters against pollution.

[04:24.18]LISTENING  Judy school took in a tree-planting campaign 6.

[05:07.23]To attract people to join,Judy and Rita wrote a notice.

[05:15.27]Listen to them talking,and complete the notice by putting one word in each space.

[08:01.15]SPEAKING

[08:06.11]A Talk time

[08:11.15][i] [i:]

[08:17.11]A1  1.a ship           a hill              a bin              hit

[08:33.62]2.a sheep            a heel 7              a bean             to leave

[08:46.63]3.ship               sheep               hill               heel

[08:59.98]bin                  bean                live               leave

[09:10.11]A2 1.I planted three trees.

[09:20.46]2.They bit me and beat me.

[09:27.22]3.These shoes don't fit my feet.

[09:35.97]4.This is a sheep and that is a ship.

[09:44.75]5.I don't want to leave the place where I live.

[09:53.21]A3 R:What do you want from the supermarket,Lily?

[10:01.86]L:Get me some meat and peas,please,some fish and chips,and some Indian tea.

[10:14.24]R:Meat,peas,fish,chips and Indian tea.

[10:23.60]Right, I'll be back in a minute.

[10:28.45]MORE PRACTICE  A Dear friend Trees are our friends.

[10:41.12]They work hard for us.They cool our cities and clean the air.

[10:48.39]They remove dust and change carbon 8 dioxide 9 into the oxygen we reathe.

[10:57.24]Trees reduce sound pollution for large urban 10 areas and add beauty to cities.

[11:07.59]They can help increase the value of prperty.

[11:12.76]Homes with many trees have higher values.

[11:18.82]Without trees,soil would wash away and there would be no food for us to eat.

[11:27.75]Without treee shade,the Earth would get too hot to live on.

[11:35.12]Trees provide shelter,food and things for both humans and animals.

[11:45.15]They also supply material for houses,furniture,paper products,etc.

[11:55.10]Some trees evenprovide important ingredients 11 for medicines that cure illnesses.

[12:04.45]Without trees,we would die.

[12:09.10]In the 200 years,more than half of all the trees on the earth have veen destroyed.

[12:20.47]We need more trees!For every tree being planted today,30 trees are being cut down.

[12:32.72]Trees for Life making a diffference.

[12:38.67]We plant trees and take care of them to help protect our environment.

[12:46.93]We give help to all the people who would like to join us in this project.

[12:55.08]We want to plant 100 million trees in the next 10 years.

[13:03.73]If you want to more about us,please send us an e-mail at info@ treesforlife.org.

[13:18.28]We hope you will have lots of fun.

[13:23.55]From  TREES FOR LIFE