41. Drinking coffee or tea may help
A. lower the incidence of non-melanoma skin cancer.
B. lower the incidence of being overweight .
C. increase the incidence of endometrial cancer.
D. increase the incidence of liver cancer.
42. Caffeine is used to
A. reduce high blood pressure.
B. cure liver cancer.
C. relieve headaches.
D. treat skin cancer.
43. Some athletes use caffeine to
A. increase their endurance
B. improve their speed.
C. maintain their alertness.
D. relax their muscles.
44. Caffeine withdrawal symptoms
A. can become an ongoing problem.
B. may last as long as a week.
C. are usually short-lived.
D. are weight loss and mental disorder.
45. Drinking three cups of coffee a day
A. may not be recommended by most doctors.
B. will probably not cause problems .
C. is harmful to healthy people.
D. may benefit sensitive people.
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