高二上学期英语听力原文 unit7

　　LISTENING TEXT to Unit Seven (for Students’ book)

　　The Disease Detective

　　Jane is one of the experts at the Center for Disease Control and Prevention. People at the Center study how diseases start and spread and， as the name shows， try to control and prevent diseases. We asked Jane about her work.

　　J = Jane; I = Interviewer

　　Part 1

　　J: Well， I have to be a detective: I go to a place where a disease has broken out and look for clues about the disease. I try to find as much information as I can about what happened. Who is sick? What are the signs — do they have a fever， a headache or a sore throat? When did they get sick? When I have collected the information， I use it to find out what caused the problem. We can use what we learn to prevent others from getting sick.

　　Jane and other disease detectives at the Center do their jobs in different ways. Some detectives work in laboratories where they examine tests and samples. Others travel to towns or villages where there are diseases and talk to people who are sick. All of the experts at the Center know that their work is important. If they do their jobs well， they will save lives.

　　Part 2

　　I: How often do you actually go to places where a new disease has broken out?

　　J: Oh， it happens every now and then. Probably about every three months or so.

　　I: How do you find out about new diseases?

　　J: We will usually hear from doctors and hospitals. If they notice anything strange， they will give us a call and ask for help. If we think it is necessary， we’ll go to the place where people are getting sick.

　　I: Aren’t you afraid of catching the diseases you are studying?

　　J: Well， yes， sometimes. But we are always very careful. If you know what you are doing， you can protect yourself. Besides， I’m more afraid of what might happen if we don’t find out what kind of disease it is.

　　What can ordinary people do to protect themselves?

　　J: The best thing you can do is simply to wash your hands often and try to avoid crowded places. Wearing a mask over your face may help， but it is probably not necessary unless you are caring for a sick person. It is also important to see a doctor if you get sick， so that you don’t spread a disease without knowing it.

　　LISTENING TEXT to Unit Seven (Workbook)

　　K = Ken; W = Dr Watts

　　Part 1

　　K: Hello， Pr Watts. Thank you for letting me interview you.

　　W: You’re welcome. Now， what would you like to know?

　　K: Well， my first question is about the name of the disease. What does AIDS stand for?

　　W: When we talk about AIDS， we often use the term HIV/AIDS. HIV is the virus that causes AIDS. AIDS stands for “Acquired Immune Deficiency Syndrome”.

　　K: Acquired Immune Deficiency Syndrome. OK， got it. But I’m not sure I understand what it means.

　　W: Well， to “acquire” something is to get something， so “acquired” means that you can get infected with the disease. “Immune” comes from “immune system”， the system that protects our body from diseases.

　　K: So “acquired immune” tells us that this is a disease that we can get from other people and that has something to do with our immune system. What exactly does AIDS do to our immune system?

　　W: That’s what the next word tells us. If something is “deficient”， it means that it isn’t functioning properly， it isn’t working the way it should. So “acquired immune deficiency” means that even though we were both with a good immune system， we have now got a disease that breaks down the immune system.

　　K: Wow， that’s terrible! So what happens when someone’s immune system doesn’t work?

　　W: Well， to put it simply， he or she gets sick a lot. The last word in AIDS， “syndrome”， means all the bad things that happen to your body when the immune system doesn’t work.

　　Part 2

　　People who die of AIDS actually don’t die of AIDS. When a person infected with HIV develops AIDS， he or she easily gets sick. A person with AIDS has a very weak immune system. Many common diseases can be cured in patients whose immune system functions well， but when they enter the body of a person with AIDS， they can kill him or her. Many AIDS patients die of infections or serious colds， but there are also many diseases that we have never heard of. If your immune system is working， they may not be able to do any harm， but because the immune system has been weakened， the diseases can’t be cured. They will grow stronger and stronger until one day they kill the patient with AIDS. Therefore， much of the treatment an AIDS patient receives is meant to help the body defend itself against diseases.