12. The word “sedentary” in Paragraph 4 probable means _____.
A. having a lot of things to do
B. involving little exercise or physical activity
C. being isolated from the outside world
D. experiencing a lot of stress
13. Which of the following is NOT mentioned in the passage as a factor leading to the popularity of fast food?
A. Cheap price.
B. The media.
C. Busy lifestyle.
D. Convenience
14. Which is NOT listed as a factor influencing the ability to have a healthy lifestyle?
A.Pollution.
B. Economic factors.
C. Dependence upon cars.
D. Influence of family or friends.
15. According to the author, _____ may be the most important factor influencing healthy lifestyles.
A. technology
B. cultural background
C. environment
D. the desire to be healthy
