结构推理
Ecstasy Affects Mental Health

   Jim had been suffering from extreme anxiety since his early twenties. Tying Ecstasy did make him feel high and help his condition, but only for a short period of time; in the end. if increased his anxiety, paranoia, and feelings of unreality. And he is nor alone -- for people who already suffer from anxiety disorders, use of Ecstasy is more likely to worsen their conditions. Ecstasy also has been associated with often mental health conditions such as depression. Youngsters who use Ecstasy weekly hove been shown to frequently experience depression in which they want to kill themselves sometimes. According to a survey, teens who use Ecstasy weekly are three times more likely to have such thoughts than non-using teenagers.
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【正确答案】
The Negative Effects of Smoking

   It's well-known that smoking has many negative effects. First, people have difficulty in stopping smoking once they become an addicted smoker. They can't imagine what life will be like if they are forced to give up smoking. Second, smoking can do a lot of harm to people's health. Those who smoke more than 20 cigarettes daily are more likely to have frequent coughs, chest pains and other troubles than those who don't. Some may even develop heart disease and lung cancer. Third, smoking can affect people's mental health conditions. People who smoke cigarettes regularly have been shown to have more difficulty concentrating their minds on what they are doing. They will be in no mood for anything and they can't achieve anything but idle away their time. All in all, people should get rid of such a bad habit to live a better life.
【答案解析】