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1,(1)飓风带来大量降水，河流水量增大，搬运作用增强，桥嫩矮，减缓水流，冲击减弱：河流水位上升，河道加宽，向右决口改道，只留下桥嫩和桥面。(2)该地位于北半球，由于地转偏向力的影响，河流右岸为侵蚀岸，加上矮桥墩阻塞，洪水右移：左侧为城区，人工河堤不易被冲刷。(3)废弃大桥下的沙洲位于河流弯道凹岸（左岸），正常时期河水对凹岸（左岸）侵蚀作用强，河道向凹岸(左岸)移动，回到原来的位置。【解析】第(1)题，飓风的天气特点是狂风暴雨，短时间内带来大量降水，河流水量迅速增大，搬运作用增强，桥嫩矮使河水流速减缓，减弱河水的冲击：河流水位迅速上升，河道加宽，向右侧决口改道，只留下桥墩和桥面。第(2)题，该地位于北半球，由于地转偏向力的影响，河流右岸为侵蚀岸，加上矮桥嫩阻塞，使洪水右移；左侧为城区，人工河堤不易被洪水冲刷，最终河道向右移动。第(3)题，该地地势低平，河道相对弯曲，凹岸侵蚀，凸岸堆积，后经裁弯取直，河道又自己移回来了。
第二节书面表达One possible version:Dear Peter,How's everything going?The English Club of our school is going to hold anEnglish speech activity themed "I love Chinese calligra-phy"from 3:00 p.m.to 5:00 p.m.this Friday in the lee-ture hall of our school.I know you are so interested in Chinese calligraphyand that you won the first prize in the Chinese CalligraphyCompetition held by the City TV in the last summer vaca-tion.There is no doubt that you have had precious experi-ence in Chinese calligraphy.So I'm writing to you tosincerely invite you to take part in this activity.We'd likeyou to introduce your experience of learning Chinese calli-graphy and share your ideas of how to write Chinese charac-ters better and better.Hoping to hear from you soon.Best wishes.Yours,Li Hua
