题目

 如图，∠DCE＝90°，CD＝CE，AD⊥AC，BE⊥AC，垂足分别为A、B． 求证：AD＋AB＝BE．   答案：略请阅读下面短文,并按照要求用英语写一篇150词左右的文章。Cleanliness is important to academic success at one Chinese university where compulsory labor is part of a program designed to award class credits while teaching students with proper moral values．During winter，the sky is still dark at 6:30 A． m．when the first year students in Trade and Management College in Zhengzhou begin sweeping the 165 acre campus and it can take up to an hour．Mr．Sun，the university official，said labor is good for building character and promotes “the spirit of hard work．” Some students also claim that they are always proud of the clean campus．They never litter because they’ve been through the labor and understand that they should respect the fruits of labor of others．Some students，however，are against it because they feel the demands of the cleaning program are a distraction．Some often show up late and hungry to their morning classes after rushing to sweep the campus and clean their rooms．【写作内容】1．用约30个单词写出上文概要；2．用约120个单词发表你的观点，内容包括：（1）支持或反对这个学校的做法；用2 3个理由或论据支撑你的观点。【写作要求】1．可以支持文中任一观点，但必须提供理由或论据；2．阐述观点或提供论据时，不能直接引用原文语句；3．作文中不能出现真实姓名和学校名称；4．不必写标题。【评分标准】内容完整，语言规范，语篇连贯，词数适当。 . . . . . .