高中英语第五册Listening课件.ppt

Listening,1. What are the people at the Center trying to do? They are trying to control and prevent disease. 2. What kind of information does Jane collect? Jane usually asks people if they,have a fever, headache or sore throat. She also asks when they got sick. 3. What does Jane do with the informa-tion she collects? She uses the information she collects to find out what caused the disease.,4. How do the “disease detectives” do their job? Some detectives work in a laboratory, and others, like Jane, travel to areas where a disease has broken out to collect information.,Listening text,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=Interview) Part 1 J: Well, I have to be a detective: I go to a place where a disease has broken out and I 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,Part2 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.,their work is important. If they do their jobs well, they will save lives.,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 will go to the place where people are getting sick.,I: Arent 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, Im more afraid of what might happen if we dont find out what kind of disease it is.,I: 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 dont spread a disease without knowing it.,If you were a disease detective, what would you do to learn more about a new disease? A: If I were a disease detective, I would collect important information about this new disease. B: If I were a disease detective, I would,Talking,visit the sick person and find out the detailed information. C: If I were a disease detective, I would find out the symptoms of this new disease. D: If I were a disease detective, I would look for viruses or bacteria in blood samples in the lab.,Listening on P123,1. What does “acquired” mean? Acquired means that you get something from someone. In “AIDS”, it means that AIDS is a disease that we get from other people.,2. What is the function of ones immune system? The immune system protects the body from diseases. 3. What does AIDS do to our immune system? AIDS breaks down the immune system.,4. How do people become infected with HIV/AIDS? People can become infected with HIV/AIDS through blood transfusion, unprotected sex and childbirth.,5. What can we do to protect ourselves from HIV/AIDS? We should learn more about the disease and avoid unsafe practices.,6. What can we do to learn more about HIV/AIDS? We can ask doctor and nurses to tell us about the disease and we can read about the disease in books and on the Internet.,Listening Text,K=Ken; W=Dr Watts Part 1 K: Hello, Dr Watts. Thank you for letting me interview you. W: Youre welcome. Now, what would you like to know?,K: Well, my first question is about the name of the disease. What does AIDS stands 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 Im 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: Thats what the next word tells us.,If something is “deficient”, it means that it isnt functioning properly, it isnt working the way it should. So “acquired immune deficiency” means that even though we were born with a good immune system, we have now got a disease that breaks down the immune system.,K: Wow, thats terrible! So what happens when someones immune system doesnt 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 doesnt work.,Part 2 People who die of AIDS actually dont 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 ente