While high school does not generally encourage students to explore new aspects of life, college sets the stage for that exploration. I myself went through this1process and found something that has changed my2at college for the better: I discovered ASL------American Sign Language(美式手语).

    I never felt an urge to3any sign language before. My entire family is hearing, and so are all my friends. The4languages were enough in all my interactions(交往).Little did I know that I would discover my5for ASL.

    The 6 began during my first week at college. I watched as the ASL Club 7 their translation of a song. Both the hand movements and the very8 of communicating without speaking 9me. What I saw was completely unlike anything I had experienced in the 10.This newness just left me11more.

    After that, feeling the need to12 further, I decided to drop in on one of ASL club`s meetings. I only learned how to 13 the alphabet that day. Yet instead of being discouraged by my 14 progress, I was excited. I then made it a point to15 those meetings and learn all I could.

    The following term, I 16 an ASL class. The professor was deaf and any talking was 17. I soon realized that the silence was not unpleasant.18, if there had been any talking, it would have19 us to learn less. Now, I appreciate the silence and the 20 way of communication it opens.

如图，有一张直角三角形纸片，两直角边长AC＝6 cm，BC＝8 cm，将△ABC折叠，使点B与点A重合，折痕为DE，则CD等于(     )

阅读下文，回答问题。

湖心亭看雪

张岱

       ①崇祯五年十二月，余住西湖。大雪三日，湖中人鸟声俱绝。

       ②是日，更定矣，余挐一小舟，拥毳衣炉火，独往湖心亭看雪。雾凇沆砀，天与云、与山、与水，上下一白。湖上影子，惟长堤一痕，湖心亭一点，与余舟一芥，舟中人两三粒而已。

       ③到亭上，有两人铺毡对坐，一童子烧酒，炉正沸。见余大喜，曰：“湖中焉得更有此人！”拉余同饮。余强饮三大白而别。问其姓氏，是金陵人，客此。

       ④及下船，舟子喃喃曰：“莫说相公痴，更有痴似相公者！”