A、Military affairs. B、Religious ceremonies. C、Social gatherings. D、Medical treatment. A题目问的是酒精在人类历史中所扮演的角色不包括哪个。由定位句可知，酒精被用于文化和宗

Drinking alcohol is a socially acceptable behavior in many parts of the world. Some medical experts say light drinking may be good for your health, especially for the heart. But they say these health benefits should be compared to many health risks linked to alcohol use. The use of alcohol can date back to more than 10,000 years ago. From then on, alcohol has played an important part in human civilization. It is used in cultural and religious ceremonies, at social gatherings, and even for medical purposes. Alcohol affects every organ in the body. When alcohol enters the body, some of it will go immediately to the stomach and the bloodstream. Once alcohol enters the blood, it will be pumped throughout the body by the heart.
    There has been a large amount of research done on alcohol and its effects on human health. Much of the research has examined the harmful effects. But, some research suggests that having one or two drinks of alcohol a day may offer some health benefits.
    Q16: How long is the history of the use of alcohol?
    Q17: What role has alcohol NOT played in human history?
    Q18: What will happen when alcohol enters the body?