中国人的政治智慧是无与伦比和无限美妙的。周恩来教会人类怎样为人处世；邓小平教会人类怎么解决恩怨情仇。符合该材料主题的理论或政策分别是（    ）

如图，从热气球C处测得地面A、B两点的俯角分别是30°、45°，如果此时热气球C处的高度CD为100米，点A、D、B在同一直线上，则AB两点的距离是（　　）

阅读下面文言文，回答问题。

    【甲】至若春和景明，波澜不惊，上下天光，一碧万顷；沙鸥翔集，锦鳞游泳；岸芷汀兰，郁郁青青。而或长烟一空，皓月千里，浮光跃金，静影沉璧，渔歌互答，此乐何极!登斯楼也，则有心旷神怡，宠辱偕忘，把酒临风，其喜洋洋者矣。

    (范仲淹《岳阳楼记》)

    【乙】洞庭为沅湘等九水之委^①，岳阳楼峙于江湖交会之间，朝朝暮暮，以穷其吞吐之幻态，此其所以奇也。楼之前为君山，如一雀尾香炉，排拆水面，林木历历可数。故楼之观得水而壮得山而妍也。

    游之日，风日清和，湖平如熨，时有小舫往来，如蝇头细字，着白溪练^②上。取酒共酌，意致闲淡。亭午风渐劲，湖水汩汩有声。千帆结阵而来，亦甚雄快。日暮，炮车云生，猛风大起，湖浪奔腾，雪山汹涌，震撼城郭。予时四望惨淡，投箸而起，愀然^③以悲，泫然^④不能自已也。   

昔滕子京左迁此地，郁郁不得志，增城楼为岳阳楼。既成，宾僚请大合乐落之，子京曰：“直须凭栏大哭一番乃快!”然其束发^⑤登朝，入为名臣，出为名帅，已稍稍展布其才；而又有范公为知己，不久报政最^⑥矣，有何可哭?

    (袁中道《游岳阳楼记》，有删改)

【注释】①委：水流所聚，汇集。②练：白色丝绢。③愀然：形容神色严肃或不愉快。④泫然：水滴下的样子，多指流泪。⑤束发：年纪轻。⑥政最：政绩考核第一等。

    He lost his arms in an accident that claimed his father's life—who was the main resource of 1 for the family. He had to depend on the2of his younger brother. For the sake of taking care of him, his younger brother became his3, never leaving him alone for years. Except for writing with his toes, he was completely unable to do4in his life.

    One late night, his younger brother5him into the toilet and then went back to the dorm to wait. But being so6, his younger brother fell asleep, leaving him on the toilet for two hours. As the two brothers 7 up together, they had their share of problems and they would often8. Then one day, his younger brother wanted to live9from him, living his own life, as many normal people do. So he was10and didn't know what to do.

    A similar misfortune happened to a girl, too. One night her mother, who suffered from mental illness,11. So her father went out looking for her mother, leaving her alone at home. She tried to prepare a12for her parents, only to overturn die stove (炉子), resulting in a fire which look her hands away.

    Though her elder sister who was13in another city, showed her willingness to take care of her, she was determined to be completely14. And she made it.

    One day, the boy and the girl were both invited to appear on a television interview program. They both were asked to15something on a piece of paper with their toes. The boy wrote: My younger brother's arms are my arms;16 the girl wrote: Broken wings, flying heart.

    Disasters can17at any time. How you handle misfortune when confronted with it is the true test of your character. If you choose only to complain and18from the difficulties, it will always follow you wherever you go. But if you decide to be19, the hardship will turn out to be a(n)20on which new hopes will arise.