在我放假期间,我去了一次白音呼社旅游景点。虽然我生在大草原,但我从来没见过它。这次旅游让我亲自去慰问了一下大草原。
早晨,我坐着车,怀着喜悦的心情,到白音呼社景点去旅游,一路上也没感觉有多远。我一直在看路边草原上的牛群羊群甚至还有骆驼不过不多。它们都在吃草。不一会车停了,我们到了目的地,我刚下车,一股清新的空气迎面扑来,忽然间,有了一种放松的心情,平时学习带给我的压力顿然间消失了。
那有辽阔无垠的大草原。有一些娱乐场所,比如,骑马山地摩托等等……还有几座洁白的蒙古包。那还有一座神圣雄伟的敖包山坐落在山顶上,有来自五湖四海的游客骑马或步行去祭敖包,表示对自己的祝福,敖包山上还挂着五颜六色的哈达,这是一种民族的习俗。我们玩了一上午,都玩得很开心。
多么有趣的白音呼社旅游啊!
万里长城是世界古代建筑的奇迹。早在春秋时期,楚国就修筑了长数百千米的非封闭性城墙,叫作方城。战国时,燕、赵、魏、韩、秦等都在边界筑起了长城。秦始皇统一天下后,把燕、赵、秦原有的北方长城连接起来,筑成西起临洮东至辽东的长城,长万余里。今山西大同北部,甘肃岷县城西等地均有秦长城遗址。
西汉沿河西走廊一带向西增筑朔方长城和河西长城,经玉门关延伸到今新疆境内,以保护河西走廊。北魏时西部柔然人满为患,又兴筑长城以防柔然人南侵。北齐也多次修筑长城。隋代为防御突厥、吐谷浑,数度修筑长城。明朝建立后,大将徐达曾18次在居庸关修筑长城。明长城西起甘肃嘉峪关,东至鸭绿江,这就是今天我们见到的万里长城。
明长城主体是城墙。山西东面至山海关一段,断面下宽上狭,平均底宽6米,高逾6.5米,外砌整齐条石和特大城砖,内部夯土。城墙顶部用三、四层砖铺砌,最上一层是方砖,用石灰勾缝,十分平正坚实,连野草也难以生根,平均宽5米,可容5马
并骑10人并进。墙顶两侧还砌有砖墙,内侧砌成约高1.5米的矮墙,外侧砌成约高1.5米的垛墙,每一垛牙上面有了望孔,下面有一射击眼。城墙上有排水沟、吐水嘴等设施,在关口和险要的地方还设有凸出的罗城。
修筑长城的工程浩大,筑长城所用土方如所来筑一道厚1米、高5米的墙,可绕地球一周有余。筑长城一般就地取材,大型城砖和石灰是就地烧制的。在高山峻岭,则开采石料,用石砌筑。在沙漠中,用红柳枝条和芦苇与砂石层层相间铺砌,可砌到6.5米以上。在黄土地区,大都取土垒筑,在重要地段的城墙一般用砖砌和条石镶砌
Dear Sir/Madam:
As a teacher at xxxx school, I am writing to provide you a recommendation for Miss/Mr.xx so as to help you assess her/his application for acceptance into your program and consideration for financial aid.
Considered a promising student with originality and sophistication in her/his thinking, (she/he was asked, in the spring semester of 2008, to develop a subsystem of a DBMS project for her B.S.thesis, for which I was the chief leader. T
his subsystem was designed to manage the information of materials in NO.1 Foundry Plant of Dongfeng Auto Works.To do the job, she/he read many books about software engineering and took some courses in Database Principles and Management. Keenly aware that the design of a DBMS decides the quality of the whole software system, she did her/his utmost from the beginning of the project.(参加过什么活动. From analyzing users requirements to designing the whole system, from the detailed designing to the final programming, she was very level-headed and full of innovation every step of the way. Taking full advantage of her ability and creativity, she firmly focused herself on her objective and gnored all distractions. She successfully reached her goal. In the final software testing, only a few bugs were found in her subsystem. My appreciation of her talelent was thus confirmed.Miss is a very personable woman, friendly and helpful, and she has always been a team player in her work.
I would greatly appreciate it if you could give her application for candidacy to your Ph.D. program favorable consideration. Should you need any further information in your deliberation, please do not hesitate to contact me.
Sincerely xxxx
爸爸妈妈终于抽出空来陪我去太极洞旅游,我开心极了。
太极洞位于安徽省广德县境内的石龙山,是国家aaaa级旅游胜地,分为水洞和旱洞,形状似太极图标,所以叫太极洞。据说,太极洞也是道家先发现的呢。
旱洞的景点有“仙舟覆挂”、“千年古槐”、“水滴石穿”等。我对“水滴石穿”最感兴趣,滴水的力量可真大呀!
乘小舟徜徉在水洞,在五色灯光的照耀下,奇石碧玉,似群星闪烁,我们好象是在银河中旅行。水洞之中,又分五层洞,著名的景点有“金龙盘柱”、“洞中黄山”、“龟蛇竞寿”等,我们都一一合影留念。特别是有一处洞中,有牌子介绍洞顶洞底相差“上下五亿年”,大自然的鬼斧神工,令人惊叹。
三个多小时的旅行结束了,我们踏上归途,但是,我对太极洞的美景久久不能忘怀。
慕田峪长城位于北京市东北隅的怀柔县境内,距北京城73公里。此段长城西接北京昌平县的居庸关,东连北京密云县的古北口,自古以来就是拱卫北京的军事要冲,被称为“危岭雄关”。早在1400多年前的北齐,就在慕田峪筑有长城。明朝初年重建,明永乐二年(公元1404年建“慕田峪关”。隆庆三年(公元1569年,谭伦、戚继光镇守京畿时,又在明初长城的基础上加以修葺。现在慕田峪所保留修复的长城,为明代所修筑,是全国明代长城遗迹中保存最好的地段之一。
慕田峪由于地理位置十分重要,在此曾发生过多次战事。其中最著名的是明代的几次战争,明初徐达和元兵也曾大战于此。慕田峪长城多建在外侧陡峭的崖边,依山就势,以险制厄。墙体高七八米,墙顶宽四五米,建筑材料以花岗条石为主,雄伟坚固。慕田峪长城,墙顶上两边都建有矮墙垛口,可两面拒敌,外侧还挖掘有挡马坑,使防御功能更加完善,这是一大特点。
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