题干

如图,为了绿化小区,某物业公司要在形如五边形ABCDE的草坪上建一个矩形花坛PKDH.

已知:PH∥AE,PK∥BC,DE=100米,EA=60米,BC=70米,CD=80米.以BC所在直线为x轴,AE所在直线为y轴,建立平面直角坐标系,坐标原点为O.

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    What's the English word for the Chinese food jiaozi? Perhaps you would say “dumpling”. But in fact, you can just say Jiaozi? It has been added to the Oxford English Dictionary.

    People in English -- speaking countries now understand more Chinese words and their spelling in pinyin, according to a recent report by the China Foreign Languages Publishing Administration.

    The CFLPA studied 50 media platforms in eight English - speaking countries, including the US, the UK and India. The report listed the top 100 Chinese words that people in these countries use the most.

    “Shaolin”, a place in China that is famous for kung fu, was at the top of the list. Other popular words include “yin yang”, “gugong”, “nihao”, “wushu”, “qi”, “qigong”, “renminbi” and “majiang”.

    Some of the words are related not only to Chinese culture, but also politics, economics and technology. These words include zhongguomeng( Chinese Dream), yi dai yi lu ( the Belt and Road Initiative, 一带一路)and zhifubao (Alipay).

    Why have these words become popular? It may be because of increased interest in learning Chinese. The Confucius Institute, which offers Chinese lessons, has set up 1073 classrooms in 140 countries and areas, with 2.1 million students, People's Daily reported.

    Chinese products are very popular around the world. For people in many foreign countries, products from China are part o their daily lives and may help them understand China better, China Daily noted.

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    阴兴,字君陵,光武皇后同母弟也。建武二年,为黄门侍郎,典将武骑,从征伐,平定郡国。兴每从出入,常操持小盖,障翳风雨,躬履涂泥,率先期门。光武所幸之处,辄先入清宫,甚见亲信。与同郡张宗、上谷鲜于裒不相好,知其有用,犹称所长而达之;友人张汜、杜禽与兴厚善,以为华而少实,但私之以财,终不为言。是以世称其忠平。

    九年,迁侍中,赐爵关内侯。帝后召兴,欲封之,置印绶于前,兴固让曰:“臣未有先登陷阵之功,而一家数人并蒙爵士,诚为盈溢。臣蒙陛下、贵人恩泽至厚,富贵已极,不可复加,至诚不愿。”帝嘉兴之让,不夺其志。贵人问其故,兴曰:“贵人不读书记邪?‘亢龙有悔’,夫外戚家苦不知谦退,嫁女欲配侯王,取妇眄睨公主,愚心实不安也。富贵有极,人当知足,夸奢益为观听所讥。”贵人感其言,深自降挹,卒不为宗亲求位。十九年,拜卫尉,亦辅导皇太子。二十年夏,帝风眩疾甚,后以兴领侍中,受顾命于云台广室。会疾廖,召见兴,欲以代吴汉为大司马。兴叩头流涕,固让曰:“臣不敢惜身,诚亏损圣德,不可苟冒。”至诚发中,感动左右,帝遂听之。

    二十三年,卒,时年三十九。兴素与从兄嵩不相能,然敬其威重。兴疾病,帝亲临,问以政事及群臣能不。兴顿首曰:“臣愚,不足以知之。然伏见议郎席广、谒者阴嵩,并经行明深,逾于公卿。”兴没后,帝思其言,遂擢广为光禄勋,嵩为中郎将。嵩监羽林十余年,以谨敕见幸。明帝即位,拜长乐卫尉,迁执金吾。

    明帝永平元年诏曰:“故侍中卫尉关内侯兴,典领禁兵,从平天下,当以军功显受封爵,又诸舅比例,应蒙恩泽,兴皆固让,安乎里巷。辅导朕躬,有周昌之直;在家仁孝,有曾、闵之行。不幸早卒,朕甚伤之。贤者子孙,宜加优异。封兴子庆为鲖阳侯,庆弟博为隐强侯。”庆卒,子琴嗣。琴卒,子万全嗣。万全卒,子桂嗣。(节选自《后汉书•阴兴传》,有删改)

【注】贵人:即光武皇后,明帝生母。