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1、精选优质文档-倾情为你奉上Day 2This year some twenty-three hundred teenagers from all over the world will spend about ten mouths in U.S. homes. They will attend U.S.schools,meet U.S.teenagers,and form impressions of the real America. At the same time about the thirteen hundred American teenagers will go to other
2、 countries to learn new languages and gain a new understanding of the rest of the world. Here is a two-way student exchange in action.Fred,nineteen,spent last year in Germany with Georges family.In turn,Georges son Mike spent a year in Freds home in America. Fred,a lively young man,knew little Germa
3、n when he arrived,but after two monthsstudy,the language began to come to him.School was completely different from what he hand expected-much harder.Students rose respectfully when the teacher entered the room.They took fourteen subjects instead of the six that are usual in the United States.There w
4、ere almost no outside activities. Familylife,too,was different.The fathers word was law,and all activities were around the family rather than the individual. Fred found the food too simple at first.Also,he missed having a car. “Back home,you pick up some friends in a car and go out and have a good t
5、ime.In Germany,you walk ,but you soon learn to like it.” At the same time,in America,Mike,a friendly German boy,was also forming his idea. “I suppose I should criticize American schools,”he says. “It is far too easy by our level.But I have to say that I like it very much.In Germany we do nothing but
6、 study.Here we take part in many outside activities.I think that maybe your school are better in training for citizens.There ought to be some middle ground between the two.”1,This year_ teenagers will take part in the exchange programme between America and other countries.A.twenty three hundred B.th
7、irteen hundred C.over three thousand D.less than two thousand2,The whole exchange programme is mainly to_A.help teenagers in other countries know the real AmericaB.send students in America to travel in GermanyC.let students learn something about other countriesD.have teenagers learn new languages3,F
8、red and Mike agreed that_A.American food tasted better than German foodB.German schools were harder than American schoolsC.Americans and Germans were both friendlyD.There were more cars on the streets in America4,What is particular in American schools is that_A. there is some middle ground between t
9、he two teaching systemsB. there are a lot of after-school activitiesC. students usually take fourteen subjects in allD. students go outside to enjoy themselves in a car5,After experiencing the American school life,Mike thought_A.a better education should include something good from both countriesB.G
10、erman schools trained students to be better citizensC.American schools were not as good as German schoolsD.the easy life in the American school was more helpful to students About 21,000 young people in 17 American states do not attend classes in school buildings. Instead,they receive their elementar
11、y and high school education by working at home on computers.The Center for Education Reform says the United States has 67 public “cyberschools”,and that is about twice as many as two years ago. The money for students to attend a cyberschool comes from the governments of the states where they live.So
12、me educators say cyberschools receive money that should support traditional public schools.They also say it is difficult to know if students are learning well. Other educators praise this new form of education for letting students work at their own speed. These people say cyberschools help students
13、who were unhappy or unsuccessful in traditional schools. They say learning at home by computer ends long bus rides for children who live far from school. Whatever the judgment of cyberschools, they are getting more and more popular. For example,a new cyberschool called Commonwealth Connections Acade
14、my will take in students this fall.It will serve children in the state of Pennsylvania from ages five through thirteen. Children get free equipment for their online education. This includes a computer,a printer,books and technical services.Parents and students talk with teachers by telephone or by s
15、ending emails through their computers when necessary. Students at cyberschools ususlly do not know one another.But 56 such students finished studies at Western Pennsylvania Cyber Charter School recently met for the first time.They were guests of honor at their graduation.1,What do we know from the t
16、ext about students of a cyberschool?A.They have to take long bus rides to school.B.They study at home rather than in classroomsC.They receive money from traditional public schools.D.They do well in traditional school programs.2,What is a problem with cyberschools?A. Their equipment costs a lot of mo
17、ney.B. They get little support from the state government.C. It is hard to know studentsprogress in learning.D. The students find it hard to make friends.3,Cyberschools are getting popular because_A.they are less expensive for studentsB.their students can work at their own speedC.their graduates are
18、more successful in societyD.they serve students in a wider age range4,We can infer that the author of the text is _A.unprejudiced in his description of cyberschoolsB.excited about the future of cyberschoolsC.doubtful about the quality of cyberschoolsD.disappointed at the development of cyberschools.
19、 Day 3There are different ways in which people try to deal with the problem of energy. One way is the greater production of common energy sources,such as coal,oil and gas.The trouble with these sources,however, is that they are not renewable.Another way is energy conservation,which means using energ
20、y more efficiently. In some very cold countries people build special houses to save energy. They place materials between the inside and the outside of the walls of the house to keep the cold out and the warmth in.The house is heated by the lights,the body heat of the people and the other equipment i
21、n it.Finally,renewable energy sources are used even though they are often expensive to develop. One form of these is geothermal energy.In certain parts of the world the temperature of the earth increases thirty degrees centigrade with each kilometer down. At six kilometers, therefore, it rises to ne
22、arly two hundred degrees. To get the heat,water is pumped down into the rocks and back up to the surface. Heat from the earth is already used in certain countries.1. How many ways of dealing with the energy problem are discussed in the text?A.2 B.3 C.4 D.52. From the text we learn that coal_ A. is q
23、uite easy to produce B. is not used most efficiently C. is the most common source of energy D. could be renewed only by new technology3. The writer tells about the “special houses”because they_ A.show the excellent skills of the builders B.serve as an example of energy conservation C.are heated by d
24、ifferent sources of energy D.are warmer than other types of houses4. The underlined words“geothermal energy”in the third paragraph mean_A.renewable source B.underground sourceC.heat inside the earth D.temperature of the earth5. At a place where the surface temperature is 15,how deep do you have to d
25、ig so as to get a temperature of 75?A. one km B.two km C.three km D.four kmI first went to Harrow in the summer term. The school had the biggest swimming pool I had ever seen. It was a good joke to come up behind a naked boy,and push him into the pool. I made quite a habit of this with boys of my ow
26、n size or less. One day I saw a boy wrapped in a towel on the side of the pool. He was no bigger than I was,so thought him a fair game. Coming secretly behind,I pushed him in,holding on to his towel so that it would not get wet. I was surprised to see an angry face come out from the water,and a bein
27、g of great strength making its way by fierce strokes to the shore. I fled,but in vain. He overtook me,seized me violently,and threw me into the deepest part of the pool. I soon climbed out on the other side,and found myself surrounded by a crowd of younger boys. “Do you know what you have done?”they
28、 said. “It is Amery;he is in Grade Six.He is champion at gym;he has got his football honor.” I was frightened and felt ashamed. How could I tell his position when he was wrapped in a bath towel and so small? I decided to apologize immediately. “Im sorry,”I said, “I mistook you for a Grade Four boy.
29、You are so small.” He didnt seem pleased at all,so I added in a most brilliant word, “My father,who is a great man,is also small.” At this he laughed,and after some general words about my rude behavior and how I had better be careful in the future,signified the incident was closed.1. The writer thou
30、ght Amery “a fair game”because the boy_ A.looked like an animal B was fond of games C. was of similar size D was good at sports2. The writer felt “ashamed”because_ A.he was laughted at by other boys B.Amery turned out to be in the same grade C.he pushed Amery hard and hurt him D.he played a joke on
31、an outstanding athlete3.By saying “My father,who is a great man,is also small”,the writer_A.tried to please Amery B.challenged AmeryC.threatened Amery D.admired his father4.Which of the following is true?A.The writer could run faster than AmeryB.The writer liked playing jokes on boys of all sizes.C.
32、Amery was a student in Grade FourD.Amery forgave the writer for his rude behavior. 专心-专注-专业- 高氯酸对阿胶进行湿法消化后, 用导数火焰原子吸收光谱技术测定阿胶中的铜、“中药三大宝, 人参、鹿茸和阿胶。”阿胶的药用已有两千多年的悠久历史, 历代宫 马作峰.论疲劳源于肝脏J.广西中医药,2008,31(1):31. 史丽萍,马东明, 解丽芳等.力竭性运动对小鼠肝脏超微结构及肝糖原、肌糖元含量的影响J. 辽宁中医杂志, 王辉武,吴行明,邓开蓉.内经“肝者罢极之本”的临床价值J . 成都中医药大学学报,1997
33、,20(2):9. 杨维益,陈家旭,王天芳等.运动性疲劳与中医肝脏的关系J.北京中医药大学学报. 1996,19(1):8.1 运动性疲劳与肝脏 张俊明.“高效强力饮”增强运动机能的临床J中国运动医学杂志，1989，8（2）：10117 种水解蛋白氨基酸。总含量在56.73%82.03%。霍光华采用硝酸-硫酸消化法和18（4）：372-374.1995,2062 林华,吕国枫,官德正等. 衰竭运动小鼠肝损伤的实验性J.天津体育学院党报, 1994,9(4):9-11. 凌家杰.肝与运动性疲劳关系浅谈J.湖南中医学院学报.2003，2（6）31. 凌家杰.肝与运动性疲劳关系浅谈J.湖南中医学院学
34、报.2003，23（6）：31. 谢敏豪等.训练结合用中药补剂强力宝对小鼠游泳耐力与肌肉和肝Gn, LDH 和MDH 的影响J中国运动医学杂 杨维益,陈家旭,王天芳等.运动性疲劳与中医肝脏的关系J.北京中医药大学学报. 1996,19(1):8.2.1 中药复方2.2 单味药33 阿胶和复方阿胶浆 常世和等.参宝片对机体机能影响的J.中国运动医学杂志，1991，10（1）：49. 聂晓莉，李晓勇等.慢性疲劳大鼠模型的建立及其对肝功能的影响J. 热带医学杂志，2007,7(4)：323-325.3.1 概述3.2 关于阿胶和复方阿胶浆医疗保健作用的3.2.1 营养成分和评价3.2.2 阿胶的药理
35、作用3.2.3 阿胶的临床应用4 Xie MH, etalEffects of Hong jing tian she 1u on reproductive axis function and exercise capacities in men. The5 周志宏等补肾益元方对运动小鼠抗疲劳能力的影响J.中国运动医学杂志，2001，20（1）：83-84202-204.5InternationalCourseandConferenceonPhysiologicalChemistry and Natrition of exercise and training (Abstract)6 杨维益等中
36、药复方“体复康”对运动性疲劳大鼠血乳酸、p 一内啡肤、亮氨酸及强啡肤Al-13 影响的实验研。仙灵口服液可提高机体运动能力，加速运动后血乳酸的消除。F3 口服液能调整PCO2 孙晓波等鹿茸精强壮作用的J.中药药理与临床，1987，3（3）：11. 于庆海等高山红景天抗不良刺激的药理J中药药理与临床，1995，7（7）：283. 牛锐淫羊藿炮制前后对小鼠血浆睾丸酮及附近性器官的影响J中国中药杂志，1989,14(9):18P 0.05) 。肝脏是动物机体重要脏器之一,Pi，同疲），肝主筋，人之运动皆由于筋，故为罢极之本”。人体肝脏的功能活动也必阿胶, 味甘性平, 入肺、肝、肾经, 具有补血止血、
37、滋阴润肺的功效。神农本阿胶,又称驴皮胶,为马科动物驴的皮去毛后熬制而成的胶块,是中国医药宝库中阿胶、熟地配伍能使补而不滋腻, 共奏益气补血之功, 主要治疗各种原因导致的气血阿胶对细有促进作用；提示阿胶能提高机体免疫功能。 另外阿胶具阿胶具有很好的止血作用，常用来治疗阴虚火旺、血脉受伤造成的出血。比如，阿胶能治疗缺铁性贫血，再生障碍性贫血等贫血症状，阿胶对血小板减少，白细阿胶是一类明胶蛋白，经水解分离得到多种氨基酸，阿胶具有很多的药理作用和阿胶又称驴皮胶, 为马科动物驴的皮去毛后熬制而成的胶块。中药界有句口头禅:阿胶中的营养成分比较多，主要有蛋白质、多肽、氨基酸、金属元素、硫酸皮肤。把阿胶应用于
38、运动员或人群中的实践应用性，具有很大的潜力和市场前景，白血病、鼻咽癌、食道癌、肺癌、乳腺癌等。阿胶不温不燥，老少皆宜，一年四季均伴随现代竞技体育的强度越来越大，运动员在大运动量训练后出现的各种疲劳征象，胞减少等症也具有效果明显效果；另外，经配伍，阿胶可用来治疗多种出血症。医学保健作用，阿胶具有耐缺氧、耐寒冷、抗疲劳和增强免疫功能作用；同时，阿胶具有本文的目的意义有以下两个方面：一是通过阿胶的抗疲劳能力，来进一本以运动性疲劳相关症状明显的篮球运动员为对象，以谷丙转氨酶、谷表明，阿胶还用于治疗妊娠期胎动不安，先兆流产,习惯性流产等。对于月经病步了解运动员服用阿胶以后，不但能够使男女运动员的谷草转氨
39、酶含量水平、谷丙转参促进人体对糖原和三磷酸腺苷等能源物质的合理利用, 并使剧烈运动时产生的乳草经将其列为上品。本草纲目载阿胶“疗吐血衄血, 血淋尿血, 肠风下痢, 女草转氨酶、谷酰转肽酶、总胆红素、白蛋白和白蛋白/球蛋白含量水平为测定指标，产生运动。从中医学的观点来看，筋就是聚集在一起的肌肉束，膜是筋的延长和扩布；常所说的肌腱和韧带等器官，韧带和肌腱坚韧有力。通过韧带和肌腱伸缩牵拉骨骼肌充在筋”, 也就说明了筋的功能受到肝脏的调节, 所以, 医家大多从筋与肝相关的角除运动后的疲劳, 已经成为运动医学领域的热点,而中医药在改善、消除运动性促进肌肉和肝脏有氧氧化能力的作用。 红景天圣露能促进机体运
40、动后的恢复和消除促进血液凝固和抗贫血作用，有提高血红蛋白红细胞，白细胞和血小板的作用。到影响。的变化, 主要表现为部分肝细胞破裂, 内容物进入窦状隙, 未受损的肝细胞糖原明的核心问题之一, 也是运动训练学所要克服的核心问题之一, 疲劳是机体的一的滋补类药品；因始产于聊城东阿，故名阿胶，距今已有两千多年的生产历史；最早低分子肽含量分别是15%45%、10.97%13.18% 。霍光华采用标准水解法和氨基低运动后血清尿素氮含量； 加速体内尿素氮及血乳酸的清除速率；提高小鼠的游泳点、“肝之合筋”的观点、“肝者,其充在筋” 的观点、“食气入胃,散精于肝,淫气于动领域的广泛应用。动性疲劳关系最为密切者当
41、首推肝脏。动性疲劳后机体恢复作用和机制的十分活跃。动员和贮备，以及机体对运动刺激的适应和运动后的疲劳的恢复起到重要的促进作用度阐述肝与疲劳的关系, 其实肝尚可通过脏腑气血等多个途径影响疲劳感的产生和度的DS 标准液, 加适量天青试液, 536nm 处测定吸收值, 建立工作曲线回归方程。对于运动产生的机理, 中医学解释比较通俗易懂, 即：韧带和肌腱的伸缩牵拉骨对运动性疲劳的多集中于中枢疲劳与外周肌肉疲劳，而较少涉及肝脏实质器而略于补立法，以健脾保肝、补中益气组方的确是防治运动性疲劳的一条新思新。故发挥和延缓运动性疲劳的产生都能起积极而有效的作用。总之,体力和脑力的产生均复的适应能力。复方阿胶浆是
42、由阿胶、红参、党参、熟地、山楂等药组成, 主入肝、脾两经。方肝，人动血运于经,”的论述。明确指出运动能力与肝和血密切相关。这种“动则血肝脾同处于中心位置，共同掌管着气化的职责，所以运动性疲劳的气虚神乏大多是由肝损害可导致动物运动能力下降, 也有大量实验观察了急性力竭疲劳对动物肝脏的肝糖原、肌糖元含量下降, 其程度随着衰竭运动次数增加而增加。林华等通过对衰肝有关，由此可以推测神经递质、激素的释放等生理活动均同肝脏有密切关系。再者肝与筋的关系非常密切，在许多著作中都阐述了这一观点。如“肝主筋” 的观肝脏对内分泌具有促进作用。中医认为，胆汁的分泌、女子的排卵、男子的排精均主藏血、主筋，为“罴极之本”
43、，有储藏营血与调节血量的作用,是提供运动所肝主疏泄，调畅气机，对气血津液的生成、输布和代谢有着重要意义。就运动生高山红景天在疲劳情况下能提高机体持续工作的时间，维持血压、心率的正常水高小鼠肝糖原的储备量； 降低运动后血清尿素氮含量；加速体内尿素氮及血乳酸的骼肌产生运动。素问六节藏象论曰：“肝者,罢极之本,魂之居也, 其华在爪, 其个特别复杂的生理生化过程。 总的说来，疲劳可分为生理疲劳和心理疲劳。 1982工作能力的作用。强力宝能促进肌肉和肝脏有氧氧化能力的作用。参宝片也能具有官的疲劳。肝脏作为人体重要的脏器，与运动性疲劳的关系极为密切。国际运动医学协会主席普罗科朴(Polo1Capur) 认
44、为运动性疲劳问题是运动医学过度的训练、残酷的比赛引起的缺氧、强应激反应会导致机体的神经内分泌系统、心过去一段时间，抗运动性疲劳传统上单纯采用补的模式,现在，中医药抗疲劳出还认为“食气入胃，全赖肝木之气以疏泄之，而水谷乃化，气血方得以运生”，说明和血虚者，如服用阿胶补益，也具有良好的效果。临床上充分发挥阿胶的养血、补血、恢复正常，促进酸碱平衡的恢复，减少碱性物质的消耗。机体的血量增加,以便增加通气/血流比值。肝内所贮存的血液就会更多的向机体全身肌腱和韧带等器官的力量。筋和筋膜向内连着五脏六腑，肝将脾输送来的精微之气浸、涉水等劳动或运动都称为“劳”, 而竞技体育由于其具有大运动量、高强度的加。剑,
45、 便无踪无影。阿娇日日夜夜在狮耳山、狼溪河附近狩猎。最后, 用利剑杀死了一奖牌呢?毫无疑问是靠长时间艰苦的训练，然而伴随现代竞技体育的强度越来越大，娇, 决心要找到救治此病的特效药物, 为民解忧。阿娇姑娘日以继夜地爬山涉水, 不竭性运动后小鼠肝脏超微结构的观察, 发现连续7 次的衰竭运动使肝细胞呈现明显筋”的观点、“肝主身之筋膜”的观点以及明皇甫中明医指掌中的“劳伤乎肝,筋和筋膜把相邻的关节连在一起，对运动起着重要的作用；并且，筋和筋膜向内连着进小白鼠耐力的提高。经论有“肝藏血”的观点，另外，在素问五脏生成论里，也有“人卧血归于景天圣露、补肾益元方、体复康、仙灵口服液及F3 口服液等。复方阿胶
46、浆能显著提究J北京中医药大学学报，1997，20（4）：37-40.具有多种代谢功能。血清谷草转氨酶、谷丙转氨酶升高在一定程度上反映了肝细胞的亢不抑,就会能协调精神、情趣和意志,使情绪稳定,思维敏捷,对运动技术水平的充分抗运动性疲劳的单味药主要有鹿茸、高山红景天、人参、淫羊藿和花粉等。实验抗运动性疲劳的中药复方主要有复方阿胶浆、高效强力饮、强力宝、参宝片、红可用，是强身健体的滋补佳品。阿胶中富含蛋白质降解成分，通过补血起到滋润皮肤劳感。” 运动性疲劳属中医“劳倦”范畴, 中医将劳力、劳役、强力举重、持重远行、劳模型组大鼠血清谷草转氨酶、谷丙转氨酶在此期间出现明显升高(P0.05 或理而言,如果
47、肝脏的疏泄功能正常,就会使骨骼和肌肉强壮有力；如果气机调畅,那么力劳动时的疲劳, 并有效减少相同体力劳动下的出汗量等作用。两虚证, 通过补充和调节人体血液的贮备量而发挥抗疲劳的作用。药理实验亦证实人量方法表明, 阿胶水溶液(Murphy 法)与其经Gornall 双缩脲和Lowry 酚试剂反量水平。从而证实阿胶能提高运动员的抗运动性疲劳的能力。二是通过对阿胶抗运动聊城大学硕士学位论文聊城大学硕士学位论文聊城大学硕士学位论文谋虑，此即“肝者将军之官，谋虑出焉”，也说是说肝和某些高级神经功能有关。（3）年的第5 届国际运动生物化学会议将疲劳定义为: “机体生理过程不能持续其机能在疲劳方面的作用日益突出。近年来，在我国运动医学界，对中医药提高体能和促进运品将会更加得到世人的瞩目，其经济效益不可估量。平，红景天制剂适用于体育运动、航空航天、军事医学等各种特殊环境条件下从事特清除速率；提高小鼠的游泳时间。高效强力饮能提高心脏的搏出量从而具有提高心脏然而近年来中医肝和运动与疲劳的关系越来越受到关注, 目前,很多实验已证明人们为了纪念阿娇姑娘恩德, 就将驴皮膏叫做“阿胶”。人血痛, 经水不调, 子, 崩中带下, 胎前产后诸疾。” 现代表明, 阿胶含明胶认识运动性疲劳对肝脏的影响及判定指标、肝脏与运动性疲劳消除等方面的关若过度疲劳损伤了肝脏,那么肌腱和韧带必