Delta Listenig Quiz 6 Q 6-10

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Question 1 of 5

1. Question
6. What is the talk mainly about?
- A. Epidemics around the world
- B. Why diseases change over time
- C. How epidemiologists gather data
- D. Experimental studies of diseases
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Question 2 of 5

2. Question
7. How does the speaker develop the topic?
- A. By describing the history of epidemics
- B. By explaining different research methods
- C. By comparing two treatment groups
- D. By presenting statistical evidence
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Question 3 of 5

3. Question
8. According to the talk, why do some epidemiologists observe two groups of people?
- A. To learn why some people get a disease and others do not
- B. To compare different people’s attitudes toward work
- C. To explain why some people take better care of themselves
- D. To understand cultural differences in approaches to disease
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Question 4 of 5

4. Question
9. Which of the following statements describes experimental epidemiology?
- A. Researchers use statistics to describe the trend of a disease over time.
- B. Researchers examine the eating habits of sick and well people.
- C. Researchers observe subjects without interfering in the process.
- D. Researchers intervene to test a hypothesis about cause and effect.
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Question 5 of 5

5. Question
10. Listen again to part of the talk. Then answer the question.
Why does the speaker talk about her own work?
- A. To show how one organization uses various approaches to epidemiology
- B. To describe her organization’s efforts to develop a way to quit smoking
- C. To inform the students that she prefers doing research to giving lectures
- D. To encourage students to work at her organization after they graduate
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