【简答题】The Risks of Cigarette Smoke Discovered in the early 1800s and named nicotianine, the oily essence now called nicotine is the main active insredient of tobacco. Nicotine, however, is only a small comp...
【单选题】A 36-year-old woman is brought to the psychiatrist by her husband because for the past 8 months she has refused to go out of the house, believ- ing that the neighbors are trying to harm her. She is af...