was the group which listened to a funny program. __4__

　　__5__ They have found that even if their patients do not really feel like laughing , making them smile is enough to produce beneficial effect similar to those caused by laughter.

　　A．Laughter can prolong one's life.

　　B．As a result of these discoveries, some doctors in the United States now hold laughter clinics in which they help to improve their patients' condition by encouraging them to laugh.

　　C．The reason why laughter can reduce pain seems to be that it helps to produce a kind of chemicals in the brain which diminish both stress and pain.

　　D．It increases blood pressure, the heart beating and breathing; it also works on several groups of muscles in the face, the stomach and even the feet.

　　E．Although laughter helps cure the disease, doctors still can not put this theory into clinic practice.

　　F．Laughter is the best medicine.

　　G．They have found that laughter really can improve people's health.

　　【答案】　1～5　FGDCB

　　IV.书面表达

　　有调查表明，很多中学生玩电脑游戏成瘾。因此，某英文报就“中学生该不该玩电脑游戏”这个主题开展征文活动。请你用英语写一篇短文，发表你的看法，向该报社投稿。你的短文至少包括以下要点：

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