高中英语高二英语listening-公开课件（讲义）.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. 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