阅读理解。 Coffee has been a part of people's lives for thousands of years, and today it is still one of the favorite drinks in the world. Many people in the world begin their busy day by drinking a cup of coffee or several cups of coffee. They have always said that a cup of coffee in the morning helps them begin their day in the right way. So they say a cup of coffee is necessary for them in the morning. Do you know what in the coffee makes our bodies and brains active? It is caffeine. Caffeine may increase a person's mental and physical abilities (精力和体能). For example, two cups of coffee will make you breathe faster and increase body heat. All this makes your heart beat faster, and doctors warn that this may be a little dangerous. Caffeine is found in tea, coffee, chocolate and some other foods. A little caffeine is probably not harmful. But too much caffeine can make people nervous and sleepless. 1. A good title for this passage is _____. [     ] A. Coffee Is Harmful B. Coffee and Tea C. Caffeine and Health D. Caffeine Is Useful 2. From this passage, we may know that drinking a cup of coffee late at night might _____. [     ] A. give you a headache B. make you fall asleep C. keep you awake D. be dangerous 3. Caffeine is found in _____. [     ] A. tea and water B. chocolate, meat and some other foods C. coffee and jam D. coffee, tea, and some other foods 4. Which of he following is NOT TRUE? [     ] A. Coffee has been a part of people's lives for thousands of years. B. Caffeine does no harm to our body. C. Two cups of coffee will make you breathe faster and increase body heat. D. Caffeine may increase humans' mental and physical abilities.