课文听力文本unit9aboutyourself

1、Unit 9 About YourselfPart I Getting ReadyExercise B.Keys：1. teeth, 24, 322. bones, 153,2063. heart, 98, 7.4. nose (meaning: not interfere in)5. foot (meaning: cause embarrassment by doing or saying sth. tactless)6. hand, hand(meaning: ask for help)7. ears (meaning: listen with care)8. Head (meaning:

2、 completely)9. neck (meaning: deeply involved in)10. heart, heart (meaning: with the deepest devotion)Tapescript:1. A: Do you know how many teeth youB: How many teeth Ooh, ooh, 24 More (A: Yes.2. A: Do you know how many bones there are in your body B: How many bones Ill take a guess. 153.A: 206.3. A

3、: How often does your heart beatB: 98 times a minute.A: No, 70 times a minute.4. Bob: Do you know what the boss thinks you should do, BillyBilly: Just you keep your great nose out of this, Bob, will you (Meaning: notinterfere in)5. Anne: Steven Kent, I never, never want to see you in my life again.S

4、teven: Oh no.Mary: You really have put your foot in it, havent you (Meaning: cause embarrassment by doing orsaying sth. tactless)6. Kate: Dave! Can you give me a hand, pleaseDave: WhatKate: I said can you give me a hand.Dave: All right, Im coming. No need to shout. (Meaning: ask for help)7.Max: Are

5、there any jobs going in your company then, for an intelligent, hard-working young man;like my son JulianFrank: No, I havent heard of any at all recently.Max: Well, could you keep your ears open, just in case (Meaning: listen with care)8. Carol: Have you heard about Maggie then Norma: Maggie Maggie T

6、hatcherCarol: No. Maggie Brown. Shes in love again.Norma: Oh not again. Who with this timeCarol: With her boss. Head over heels in love with him, she is. (Meaning: completely)9. Nick: Have you ever lent any money to MickJill: Mick Huh! I wouldnt lend him any if I were you.ve gotYes) 32Nick: Why not

7、Doesnt he pay it backJill: No. Never. Hes up to his neck in debts. (Meaning: deeply involved in)10. Liz: Shes a very good doctor. Never looks at her watch. Never complains. Nothings too much troublefor her.Pat: I know, yeah. Not many like her about. Shes all heart, really. All heart.(Meaning: with t

8、he deepest devotion)Part nExercise A.Keys:4 3 5 2 4 1 3 4 4 1 Tapescript:Our body is madeup of thousands of different parts. All these parts work together to keep usalive and to help us move around. The parts of the human body are like the parts of a very complicatedmachine. Like any other machine,

9、however, if it is inexpertly cared for, over-taxed or insufficientlyused, it will become rusty, sluggish or clogged and parts of its mechanism may even grind to a halt.That is why it is so important to keep every part of the human machine healthy and properly cared.To keep in good running order, the

10、 body requires the raw materials for growth and the replacementof tissues when necessary. Our bodies bum food like fuel to produce the energy we need.The human digestive system is a bit like a very long tube, but its a lot more complex. Itsseveral meters long, and most of it is carefully coiled up i

11、n our abdomen. It has several importantjobs to do.First, it must digest or break down our food. Digestion starts the momentfood enters our mouth.Then it continues as the food is squeezed along the gut by muscles in the wall of the intestine. Asthe food travels through the gut, natural chemicals call

12、ed enzymes are added to it, which help breakdown the food. Then this digested food and water must be absorbed from the gut into our blood streamso that it can be used by the body. Finally, the gut must carry away any waste products in the formof feces.Usually our intestine does all these things very

13、 efficiently. But sometimes things can go wrong.Probably the most common gut symptoms are diarrhea and constipation.With diarrhea, the food and water travels too quickly through the intestine, often making the feceswatery, and making it necessary to open the bowels more frequently.There are lots of

14、causes of diarrhea. Probably the commonest causes of diarrhea are contaminatedfood or water, and infection caused by viruses or parasites.Many cases of diarrhea clear up within a few days without any special medicines.But the body loses a lot of fluid through diarrhea, so there is a very real riskof

15、 the body drying out or becoming dehydrated. Because of this risk of dehydration, the best treatmentfor diarrhea is simply to make sure you are dinking enough.Avoiding dehydration in this way can be a life saver.Exercise B.Keys:Causes of diarrhea:food poisoning, themselves, the gut,get very nervous,

16、 stressed about something diarrheaTreatment of diarrhea:serious, clear up, one or two days, drink lots of fluid, eat too much, salt and sugar, specially mixed,sugar and a pinch of saltTapescript:There are lots of different causes of diarrhea. Um, there are infections thatcan happen, and this is food

17、 poisoning, if you like, where in your food you eat some sort of bacteriaor organisms, which infect you. Some foods can just irritate the gut and tend to give you diarrhea,although they are not infected. Its just the food itself (that) might irritate your system. Somepeople,if they get very nervous

18、and stressed about something, find they tend to get diarrhea. Something calledthe irritable bowel syndrome where something goes wrong with the way the gut works. And people thatsuffer from this tend to get, um, tummy pains, and they get sometimes diarrhea, sometimes constipation.All sorts of causes.

19、Most attacks of diarrhea, urn, particularly in adults, are not serious clear up bythemselves within one or two days. The most important thing is lots of fluid, because ifyou have got diarrhea, youre obviously losing a lot of fluid. And so its better reallynot to eat too much, not to worry about that

20、, but o make sure you drink plenty of fluid. And ideally,this should have a little bit of salt and sugar in. You can get special dehydrating fluids, whichare specially mixed. But if you want to make your own by adding just a teaspoonful of sugar and apinch of salt, then its obviously perfectly reaso

21、nable to do that.and theyto drinkPart川Immu nityExercise B.Keys:1. Because there are some things which we2.A version of an illness is given to the body,actually being infected with that infection. respondvery quickly.3. No. We cant produce a vaccine for AIDS,4. The HIV virus, which causes AIDS, attac

22、ks itselfcan change very easily. It recognize all types of HIV.re not naturally immune to.and the body thinks that itThe next time it sees it, thesbody canfor instance.the human immune system. And the viruss very difficult to find a vaccine which canTapescript:The human body is constantly under atta

23、ck from invading germs and infections.And the only reason we dont suffer from constant illness is our bodies have their own defense mechanismto fight off disease. This resistance to infection is called immunity.A: How does immunity workB: Well, the immune system is the bodys own secret army, which f

24、ights infection.And it consists of a whole range of troops, soldiers, their cells and their molecules. Now theheadquarters of this army is really the blood. Thats where it does most of its fighting.And sometimes it needs some reserve, and that comesfrom the bone marrow. Thats where the immune cells

25、are made.A: So there are many different kinds of cells, different kinds of molecules in the immune system.I guessed the ones that were probably more familiar with are white blood cells.B: Thats right. White blood cells form a major part of the bodys defense. But there are also antibodiesin their lif

26、e, more proteins. They just lash onto the invaders. The white cells can sometimesactually gobble up invaders. The clever thing is that once the infection has attacked our body,the immune system seems to have a memory of the invader, so that the next time it sees the invaderit very quickly.A: There a

27、re some things which were not naturally immune to and thats where vaccinationcomes in, isnt itB: Exactly. Vaccination plays on the bodys ability to remember infection. happens is thatsomeone is given a version of an illness, for instance, or polio, or tuberculosis,and the body thinks that it is actu

28、ally being with that infection. And the next timeit sees it, the body can respond very quickly. All the troops of its immune systemcan come into play.A: Now sometimes the immune system doesnt work very well, does itB: No. Its a remarkably complex system. And sometimes it can go wrong. Either it can

29、be overactive,so it actually starts to attack our own body self, or it can be underachieve sometimes, and weare more likely to be infected situation.A: Are there any important illnesses, which result from the immune system so that itsturning on our bodies themselvesB: There are. One example would be

30、 a disease like multiple-sclerosis, where the bodys own immunesystem attacks the lining of nerves, which means that nerves dont work properly.A: Were able to assist the body in its fight against the illness in many cases, but thereare some diseases which we dont seem to be able to produce a vaccine

31、for. AIDS is one of them.Why notB: The problem is AIDS, which is caused by the HIV virus, attacks the human immune system, which meansthat our normal defenses arent there to fight off that infection. The other problem with tryingto produce a vaccine against HIV or AIDS is that the virus, HIV, can ch

32、ange itself so easily.Thats very difficult tofind a vaccine, which can recognize all the different types of HIV. So one vaccine may be effectiveagainst one type of the virus but it may absolutely be no good for another type.Exercise C.Keys:can attackSo whatmeaslesinfectedin thatpeoplesheadquarters宀b

33、loodGobbling up invadersHaving a memory of invadersUnderactivemore likely to be infected the immune system: 2 3vaccination : 5HIV: 1 4 6Tapescript:Presenter:The human body is constantly under attack from invading germs andinfections. And the only reason we dont suffer from constant illness is our bo

34、dies havetheir own defense mechanism to fight off disease. This resistance to infection is calledimmunity. And here with me to discuss how it works is Grime Easton. He is a family doctor,and a member of theScience In It here in the BBCWorld Service. Grime, how does immunity workGrime: Well, the immu

35、ne system is the bodys own secret army, if you like, which fights infection.And it consists of a whole range of troops, soldiers, their cells and their molecules. Um,now the headquarters of this army is really the blood. Thats where it does most of the fighting.And sometimes it needs some reserve, s

36、ome backup, and that comes from the bone marrow. Thatswhere the immune cells factories are,Presenter: So there are many different kinds of cells, and different kinds ofmolecules tied up in the immune system. I guessed the ones that were probably more familiarwith are white blood cells.Grime: Thats r

37、ight. White blood cells form a major part of the bodys defense. But there are alsoantibodies in their life, more proteins, which just lash onto the invaders. Um, but, as yousay, the white cells can sometimes actually gobble up invaders. So the clever thing is thatonce the infection has attacked our

38、body, the immune system seems to have a memory of theinvader, so that the next time it sees the invader it can attack very quickly.The immunesystem in the humanbody fights invading disease. Immunity occurs becausethe immunesystem can rememberthe chemical makeupof invading germs and attack themvery q

39、uickly.Presenter: There are some things which were not naturally immune to and thats where vaccinationcomes in, isnt itGrime: Exactly. Vaccination plays on the bodys ability to remember infection. So what happens isthat someone is given a version of an illness, for instance, measles or polio, or tub

40、erculosis,and the body thinks that it is actuallybeing infected with that infection. And the next time it sees it, urn, the body can respondvery quickly. And all the troops of its immune system can come into play.Vaccination can be used to protect the body against specific infections.Presenter: Now

41、sometimes the immune system doesnt work very well, does it Grime: No. Its a remarkablycomplex system. Its a very complicated system. And sometimes it can go wrong. Either it can beoveractive, so it actually to attack our own body self, or it can be under active sometimes,and we are more likely to be

42、 infected in that situation.Presenter: Are there any important illnesses, which result from the immune system so thatits turning on our bodies themselvesGrime: Thereare. And oneexample would be adisease likemultiple-sclerosis,of nerves,is that HIV itself attacks the humanimmune system, which means t

43、hat our normal defenses arent thereto fight off that infection, or indeed many other sorts of infection. The other problem withtrying to produce a vaccine against HIV or AIDS is that the virus, HIV, can change itselfso easily. Urn, thats very difficult to find a vaccine which can recognize all the d

44、ifferenttypes of HIV, which there are. So one vaccine may be effective against one type of the virusbut it may absolutely be no good for another type.HIV is the virus that causes AIDS. HIV destroys the bodys immune system, and putsthe body at greater risk from other common infections.Presenter: I wa

45、s talking to Dr. Grime Easton of the Science In It about immunity. The reason why he,I, and I hope you, are able to remain as healthy as we are.Part IV The Circulatory SystemKeys:parts, waste, body, needed, heart, defense, cells, invaders two, lungs, blood, back, arterieswalls, cell, heart, oxygen,

46、blood, digestive, liver, heartPart V HairKeys:Caller s name: Jim BaillieProblem: losing hairCaller s doctor s opinion: nothing he can do aboutSolution: not a lot he can do about it; try to acceptstartswherewhichthe bodys own immune system, we think, attacks the lining means thatpeoples nerves dont w

47、ork properly.Presenter: Were able to assist the body in its fight against the illness inmany cases, but there are somediseases which we dont seem to avaccine for. Um, AIDS is one of them. Why notGrime: Well, the problem is AIDS, which is caused by the HIV virus,be able to produceit; hereditaryAdvice: don t comb it over; dont wear any false hairpiece thingsTapescript:Radio presenter: All right. Thank you for that call, Rosemary. We now go, I think,to Glasgow and our next caller, er,