[单项选择]A. One scientist.
B. One coffee farmer.
C. One former Starbucks employee.
D. One worker in the coffee company.

[单项选择]Coffee can be considered one of nature’s greatest gifts. It gives mental and emotional (67) without harmful side effects, and it (68) a wealth of nutrients. Yet, when most people drink coffee, they are not thinking that the beverage is (69) their health. In fact, some may even feel a little guilty, (70) some believe coffee isn’t good for you at all.
Well, coffee, like anything else, can cause problems if too much is (71) . Moderate consumption of coffee (72) your body with a wealth of antioxidants. These substances are responsible (73) eliminating free radicals. They are the chemical byproducts produced any time your body does something. A small numi6er of them can help serve (74) a buffer against negative elements, if they aren’t (75) in check, they can cause health problems. Antioxidants ensure that this doesn’t happen.
The psychological effects of caffeine cannot be (76) either. Not only does caffeine ma