初中英语牛津八年级下02

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[00:00.00]和谐英语学习网 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 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 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 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 its neighbours?
[03:29.74]The trees can then protect themselves by producing a chemical
[03:35.30]that makes their leaves taste nasty.
[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.
[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              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.