四级晨读美文记单词(12)12921.pdf

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1、 学英语 找长喜【】1 四级晨读美文 Unit 12 Natural World 自然世界 Text 1 Western Wild Grasses Legend(传奇故事)has it that sometime toward the end of the Civil War(1861?1865)a government train carrying oxen traveling through the northern plains of eastern Wyoming(怀俄明州)was caught in a snowstorm and had to be abandoned.The dr

2、iver returned the next spring to see what had become of his cargo.Instead of the skeletons he had expected to find,he saw his oxen,living,fat and healthy.How had they survived?The answer lay in a resource that ignorant Americans had trampled(践 踏)underfoot(在脚下面)in their haste to cross the“Great Ameri

3、can Desert”to reach lands that sometimes proved barren.In the eastern parts of the United States,the preferred grass for feed was a cultivated plant.It grew well with enough rain,and then when cut and stored it would cure and become nourishing hay for winter feed.But in the dry grazing(放牧的)lands of

4、the west,that familiar bluejoint(加拿大拂子茅)grass was often killed by drought.To raise cattle out there seemed risky or even hopeless.Who could imagine a fairy-tale grass that required no rain and somehow made it possible for cattle to feed themselves all winter?But the surprising western wild grasses d

5、id just that.They had wonderfully convenient features that made them superior to the cultivated eastern grasses.Variously known as buffalo grass,grama(美国西部产的一种牧草)grass,or mesquite(牧豆树)grass,not only were they immune to drought；but they were actually preserved by the lack of summer and autumn rains.T

6、hey were not juicy like the cultivated eastern grasses,but had short,hard stems.And they did not need to be cured in a barn,but dried right where they grew on the ground.When they dried in this way,they remained naturally sweet and nourishing through the winter.Cattle were left outdoors to fend for

7、themselves thrived on this hay.And the cattle themselves helped plant the fresh grass year after year,for they trampled the natural seeds firmly into the soil to be watered by the melting snows of winter and the occasional rains of spring.The dry summer air cured them,much as storing in a barn cured

8、 the cultivated grasses.A cargo B Civil C convenient D cultivated E ignorant F haste G immune H familiar I barren J nourishing K skeletons L stems M survived N thrived O snowstorm 西部野草 有一个传奇故事发生在美国内战(1861-1865)快结束时的某一天，一辆运输牛的政府列车横穿东怀俄明州的北部平原时遇到了暴风雪，不得不被遗弃在那里。第二年春天，司机返回去看他的货物变成了什么样子。他原先想着会看到一些牛骨架，结果不

9、是这样，他看到自己的牛还活着，而且膘肥体壮。它们是怎么生存下来的呢?问题的答案是一种资源，是一种无知的美国人在他们匆忙穿过“伟大的美国荒漠”抵达那些有时被证明是贫瘠的土地时践踏在脚下的资源。在美国的东部地区，用来放牧的首选的草是一种人工种植的植物。有充足的雨水时，它们长得很好，然后割下并储存，晾干后他们变成冬天里用作饲料的营养丰富的干草。但在西部干 学英语 找长喜【】2 旱的牧区，那种常见的加拿大佛子茅草常常会旱死。在那里养牛似乎很冒险甚至是毫无希望的。谁能想象一种小草，它不需要雨水，而且莫名其妙地使牛群在整个冬天能够以之为食?恐怕童话中才有。但令人称奇的西部野草确实做到了。它们极其合宜的特性

10、使得它们比东部种植的草生命力更强。这些草有不同的叫法，比如野牛草，格兰马草或者是牧豆树草，它们不仅不受干旱的影响，实际上反而由于夏秋雨水的缺乏而得到保护。不像东部种植的草那样多汁，它们的茎短而且硬。它们不需要在畜棚里晾干，而是就在它们生长的地面上干缩。当它们这样变干的时候，整个冬天里都保留着自然的芳香和营养。那些被留在野外自寻生路的牛就靠这些干草茁壮成长。而这些牛自身也年复一年地帮助种植新草，因为它们将野生的种子坚实地踏入土里，使其得以被冬天融化的雪或偶尔会有的春雨浇灌。与储藏在畜棚里晾干的种植的草几乎一样，夏天干燥的空气也会使它们变干。难 句 解 析 1.Legend(传奇故事)has it

11、 that sometime toward the end of the Civil War(1861?1865)a government train carrying oxen traveling through the northern plains of eastern Wyoming(怀俄明州)was caught in a snowstorm and had to be abandoned.【分析】复合句。Legend has it that.为固定句型，that 后 的成分为 legend 的同位语。从句基本结构为 a government train was caught.and

12、 had to be.。sometime.War 作从句的状语，carrying oxen 为现在分词短语作伴随状语。2.The answer lay in a resource that ignorant Americans had trampled underfoot in their haste to cross the“Great American Desert”to reach lands that sometimes proved barren.【分析】多重复合句。第一个 that 引导定语从句，修饰 a resource,第二个 that 引导的定语从句修饰 lands。3.An

13、d the cattle themselves helped plant the fresh grass year after year,for they trampled the natural seeds firmly into the soil to be watered by the melting snows of winter and the occasional rains of spring.【分析】复合句。for they trampled.the soil 是原因状语从句，to be watered by.rains of spring 是动词不定式作后置定语，修饰 the

14、 soil。下面我们学习文中标红的高频词#高频词汇 civil*a.公民(间)的；国内的；民用的；文明的，有教养的【联想】讲文明(civil)就不能像恶魔(devil)似的那么邪恶(evil)【搭配】civil riot 民众的骚乱；a civil court 民事法庭；civil war 内战【活用例句】Despite the good news,civil engineers arent resting on their successes.尽管如此，土木工程师们并没有满足于所取得的成功。snowstorm n.暴雪，暴风雪【引申】同根snowball n.雪球 v.像雪球般迅速增大；sn

15、owman n.雪人【活用例句】All flights having been cancelled because of the snowstorm,many passengers could do nothing but take the train.因为暴风雪取消了所有航班，许多旅客不得不改乘火车。学英语 找长喜【】3 cargo n.(船、飞机等装载的)货物【联想】car(汽车)go(走)载在汽车上被运走的东西货物【搭配】a cargo ship 货船；transport the cargo 运输货物；unload the cargo 卸货【活用例句】The tanker began t

16、o spill its cargo of oil.油轮开始漏油。skeleton n.骨骼；框架；梗概，提要【谐音】“skin 里头”皮肤里头是骨骼【搭配】a dinosaur skeleton 恐龙骨架；the skeleton of the argument 论点【活用例句】She told me about the skeleton of her new novel.她把自己一部新小说的梗概对我讲了一遍。survive*vi.活下来，幸存，继续存在#09 vt.比活得长；从(困境等)中挺过来【词根】sur(在下面)viv(生命)e 在废墟下面活下来幸存【搭配】survive the wa

17、r/accident 在战争(事故)中幸存；survive in the intense competition 在激烈的竞争中生存；survive from.从中逃生【引申】同根survival n.幸存，幸存者survivor n.幸存者【活用例句】Although she was 5 years older than her husband,she survived him 10 years.虽然她比丈夫大 5 岁，但她比他多活了 10 年。ignorant*a.不知道的；无知的，愚昧的【词根】来自 ignor(e)(不理，忽视)ant(的)不知道的【搭配】an ignorant per

18、son 无知的人；be ignorant about modern technology 对现代技术一无所知【活用例句】Being ignorant of the law is not accepted as an excuse for breaking the law.对法律的无知不可以作为违反法律的借口。反义 learned a.有学问的，博学的；通过学习(或经验等)获得的【搭配】the learned profession 需要学问的职业；the learned professor 知识渊博的教授【引申】同根 learn v.学习；(of)了解learning n.知识，学问，学习：a

19、man of learning 学问高深的人反义ignorant a.无知的，愚昧的innocent a.无辜的，天真的，无知的【活用例句】The more learned a man is,the more modest he usually is.人愈有学问，往往愈是谦虚。haste n.急速，急忙【联想】急速(haste)把布告贴(paste)出去【提示】注意与 hurry 的搭配区别：in haste=in a hurry 急忙地；Make haste!=Hurry up!赶快!【写作例句】Haste makes waste.Youve got to do it step by ste

20、p.欲速则不达。你得一步一步地干。学英语 找长喜【】4 barren a.(土地等)贫瘠的；不结果实的，不(生)育的；无益的，没有结果的【谐音】“巴人”巴山蜀水贫瘠的【活用例句】Within ten years they have tamed the barren hill into green woods.十年时间，他们把荒山变成了绿林。反义 fertile a.肥沃的；多产的，丰产的；(想象力或创造力)丰富的【词根】fer(运载)tile(的)能运载很多的多产的【搭配】the product of a fertile imagination 想象力丰富的产物；a fertile valle

21、y 肥沃的流域【活用例句】The region at that time was a fertile ground for revolutionary movement.当时该地区是革命运动的沃土。cultivated a.有修养的，文雅的；耕种的【引申】同根cultivation n.培养，教养；耕作【活用例句】Being gentle and cultivated is often a scholars attitude.温文尔雅正是学者的态度。nourish vt.滋养；抚养，养育；供给，助长【联想】n our(我们的)ish(使)我们养育自己的子女养育，喂养【搭配】nourish th

22、e talents of the children 培养孩子的才能；nourishing food 滋补食品【活用例句】Most plants are nourished by water drawn up through their roots.大多数植物是靠根部吸收水分得以生长的。familiar*a.熟悉的，通晓的；冒昧的，放肆的；随便的，不拘礼节的【联想】famili(i 的 y 变体，family 家庭)ar(的)家庭成员之间当然是熟悉的【提示】注意所接介词：be familiar to sb 是某人所熟悉的；be/get familiar with sth对某事了解。【听力例句】G

23、one are the nine-to-five jobs,lifetime security,predictable promotions,and even the conventional workplace,as you are familiar with.将要失去的是你所熟悉的朝九晚五的工作、终生的安全感、可预知的升迁和常规的工作环境。08.6 convenient*a.省力的，方便的；近处的，近便的【搭配】a convenient time to receive guests 接待客人的适宜时机；be convenient for the shops 离商店很近；be conveni

24、ent for sb 对某人来说很方便【引申】同根convenience n.方便，合宜同义handy a.方便的；近便的nearby a.附近的【活用例句】Is it convenient that I meet you in your office at noon today?今天中午和你在你办公室见面方便吗?immune*a.免疫的，有免疫力的；不受影响的；豁免的【词根】im(没有)mune(公共)不受公共环境影响的免疫的 学英语 找长喜【】5【搭配】become immune to criticism 不在乎批评；be immune from prosecution 免予起诉【活用例句

25、】Stress that you can manage may also boost immune function.你能应对的压力也可能增强你的免疫功能。stem*n.茎，干；词干 vi.(from)起源于 vt.堵住，抑止【联想】起源于(stem)合同的一条款(item)【搭配】stem the flow of drugs 遏制毒品流通【活用例句】The cut was bandaged to stem the bleeding.伤口进行了包扎以止血。/Most peoples insecurities stem from something that happened in their

26、childhood.人缺乏安全感多是童年时的经历造成的。thrive*vi.兴旺，繁荣【联想】th rive(看作 river 河)古代人类文化的繁荣都起源于几大流域繁荣【搭配】thrive on sth 以某事为乐，因某事而有成【写作例句】As the pace of the modern world is getting faster,many people dont have the time to go home to make a lunch.They enjoy eating out.Consequently,fast food restaurants are thriving.随

27、着当今世界生活节奏的加快，许多人没有时间回家做午饭，他们喜欢在外面吃，因而快餐业随之兴起。下面我们学习文中标黑的常用词#常用词汇 catch*vt.抓住，(使)夹住；偶然(或突然)撞见；染上(疾病)；引起，吸引；领会【短语】catch at(a straw)试图抓住(一根稻草)；catch on(what sb said)理解(某人所说的话)；流行起来；catch out 指出，识破；catch sb out 显示出某人无知或犯错误；catch up(with sb)赶上(某人)，吸引 【活用例句】I caught her smoking in the bathroom.我撞见她在盥洗室里抽烟

28、。/I didnt quite catch what you said.我没听清楚你的话。desert*n.沙漠，不毛之地；vt.离弃，抛弃；遗弃 vi.擅离职守【联想】“沙漠”是不是像被人“抛弃”的一大块土地呢?【搭配】the Sahara Desert 撒哈拉沙漠；a cultural desert 文化沙漠；desert his wife 抛弃他的妻子；desert teaching for politics 弃教从政【活用例句】The guard was punished for deserting his post.卫兵因擅离职守而受到处罚。cure*vt.治愈；消除，矫正 n.治愈

29、，疗程；药(剂)【联想】cure(消除)lure(诱惑)pure(完全的)sure(有把握的)消除(cure)诱惑(lure)并不是完全(pure)有把握的(sure)【搭配】cure sb of sth 矫正某人的不良行为；cure a serious illness 治愈一种严重的疾病【阅读例句】Earlier detection and treatment may not have cured him,but it would 学英语 找长喜【】6 have prolonged(延长)his life.早期的诊断和治疗或许并不能使他痊愈，但是至少可以延长他的生命。08.12 hopele

30、ss a.无希望的，毫无办法的，绝望的【词根】来自 hope(v.认为)less(表否定)【听力例句】But if you fail,if the person jumps into the Bosten Larfog,there is no describing how hopeless you feel.但是如果你失败了，如果你想要挽救的人跳进了博斯腾.拉夫格河里，根本就无法形容你有多无助。03.9 同义 desperate a.不顾一切的，孤注一掷的；极想望的，极需要的；绝望的【词根】de(not)sper(hope)ate(的)没有希望的绝望的【活用例句】I would never h

31、ave resorted to a court of law if I hadnt been so desperate.我要不是因为走投无路，绝不会告到法院去的。feed*vt.提供；喂(养)，饲(养)vi.以为食物 n.饲料【搭配】feed with.向提供；feed on.吃，以为食；be fed up with 饱受，厌烦【活用例句】In my fridgeless Fifties childhood,I was fed well and healthily.我的童年时代并没有冰箱，但我吃得很好也很健康。juicy a.多汁的，汁液丰富的【搭配】soft juicy pears 脆而多汁

32、的梨【引申】同根juice n.汁，液【活用例句】Look,how fresh and juicy those grapes are.瞧,这些葡萄怪水灵的。fresh*a.新的；新鲜的；新颖的；精神饱满的；(水等)淡的【联想】果肉(flesh)是新鲜的(fresh)【搭配】fresh vegetables；fresh water 淡水【活用例句】In previous times,when fresh meat was in short supply,pigeons were kept by many households as a source of food.在以前，新鲜肉类短缺，许多家庭

33、饲养鸽子作为食物。soil n.泥土，土地，土壤 vt.弄脏，使变脏【搭配】soil erosion 土壤侵蚀；soiled bedding 脏了的床上用品【活用例句】I dont want you soiling your hands with this sort of work.我不希望你干这种事，免得脏了你的手。Text 2 Ocean Water Ocean water plays an indispensable role in supporting life.The great ocean basins hold about 300 million cubic miles of w

34、ater.From this vast amount,about 80,000 cubic miles of water are sucked into the atmosphere each year by evaporation(蒸发)and returned by precipitation(降雨)and drainage to the ocean.More than 24,000 cubic miles of rain descend annually upon the continents.This vast amount is required to supply the lake

35、s and streams,springs and water tables on which all 学英语 找长喜【】7 flora(植物群)and fauna(动物群)are dependent.Thus,the hydrosphere(水圈，水界)permits organic existence.The hydrosphere has strange characteristics because water has properties unlike those of any other liquid.One strange point is that water upon fre

36、ezing expands by about 9 percent,whereas most liquids contract on cooling.For this reason,ice floats on water bodies instead of sinking to the bottom.If the ice sank,the hydrosphere would soon be frozen solidly,except for a thin layer of surface melt water during the summer season.Thus,all aquatic(水

37、的)life would be destroyed and the interchange of warm and cold currents,which moderates climate,would be notably absent.Another outstanding characteristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia(氨).This characteristic enables the ocean

38、s to absorb and store vast quantities of heat,thereby often preventing climatic extremes.In addition,water dissolves more substances than any other liquid.It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents.In several area

39、s of the world these minerals are being commercially exploited.Solar evaporation of salt is widely practiced,potash(碳酸钾)is extracted from the Dead Sea,and magnesium(镁)is produced from sea water along the American Gulf Coast.A amount B contract C descend D dissolves E exploited F extracted G floatsH

40、indispensable I interchange J melt K notably L outstanding M permits N properties 海水 海水在支持生命方面起着不可或缺的作用。广阔的海洋容纳了约 3 亿立方英里的水。其中每年有 8 万立方英里的水蒸发被大气吸收，然后又通过降雨和排水返回到大海。每年有超过 2.4 万立方英里的雨水降到陆地上。这些雨水供给湖泊、河流、泉水和地下水，所有的植物和动物都依赖这些水源。因此水圈使得有机体能够生存。因为水有着与其他液体不同的特性，所以水圈有着奇怪的特征。一个奇怪的地方就是水在结冰时膨胀约百分之九，而大多数液体则在冷却时收缩。

41、由于这个原因，冰浮在水上而不是沉到水底。如果冰下沉的话，水圈将很快结冰固化，只有在夏季时表面会有一薄层融化水。从而所有的水生生命都将遭到破坏并且会明显缺少保持气候适中的冷热流交换。水的另一个突出特点是它的热容，除了氨之外的所有液体和固体中，水的热容最大。这个特点使得海洋能够吸收和存储大量的热量，因此常能防止气候的极度变化。另外，水能比任何别的液体溶解更多的物质。这个特点使得海洋成为一个巨大的矿物质储藏室，这些矿物质是从大陆冲刷下来的。世界上有几个地区正在商业开采这些矿物质。日光蒸发制取盐的方法被广泛采用，碳酸钾是从死海里提取的，而镁则是从美洲海湾沿岸的海水中制取的。难 句 解 析 1.This

42、 vast amount is required to supply the lakes and streams,springs and water tables on which all flora(植物群)and fauna(动物群)are dependent.【分析】复合句。其中 which 引导定语从句修饰 lakes and streams,springs and water tables，dependent on 为固定短语，所以用 on which。2.Another outstanding characteristic of water is that water has a

43、heat capacity which 学英语 找长喜【】8 is the highest of all liquids and solids except ammonia.【分析】多重复合句。that 引导的从句作表语,表语从句中又有 which 引导的定语从句，修饰 a heat capacity，except ammonia 作状语。3.It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continen

44、ts.【分析】多重复合句。其中包含两个定语从句，第一个 which 引导的定语从句，修饰 this characteristic；第二个 which 引导的定语从句，修饰 minerals.下面我们学习文中标红的高频词#高频词汇 indispensable*a.必不可少的，必需的【词根】in(不)dis(分开)pens(称量)able(的)分开称时所不可缺少的必需的【搭配】be indispensable for/to.对来说是不可缺少的【引申】同义essential a.必不可少的，绝对必要的necessary a.必要的required a.必需的vital a.至关重要的，必需的反义di

45、spensable a.可有可无的【活用例句】In the Chinese household,grandparents and other relatives play indispensable roles in raising children.在中国家庭里，祖父母和其他亲戚在抚养儿童中起着不可缺少的作用。amount*n.数量，总数 vi.合计；(在意义等)等同，接近【联想】a(表方向)mount(爬)数字爬到最高处总计【搭配】an amount of time 一段时间；amount to 总计，共达【活用例句】The small countrys loss in natural d

46、isasters has amounted to$1.5 billion this year.这个小国家今年在自然灾害中的损失总计 15 亿美元。descend*vi.下来，下降【词根】de(down)scend(登，爬)向下爬下来，下降【搭配】descend on 突然大批来访，袭击；descend into 逐渐陷入；descend from the top of the mountain 从山顶上走下来【引申】同义decline vi.下倾，下降【活用例句】You can ride the escalator up but have to descend on foot.你可以搭电梯上去

47、,但要自己走下来。permit*v.允许，许可；(使)有可能 n.许可证，执照【搭配】permit smoking in the room 允许在房间里吸烟；apply for a permit 申请许可证；issue a permit 签发许可证【引申】同义admission n.准许进入，接纳【活用例句】Radios are not permitted in the library.图书馆内不许使用收音机。/Permit me to offer you some advice.请允许我向你提些建议。property*n.财产，资产，所有物；房产，物业；性质，性能【联想】proper(固有的

48、，特有的)ty(表物)固有物 学英语 找长喜【】9【搭配】property prices 房地产价格；a plant with medicinal properties 药用植物；intellectual property 知识产权【引申】同义asset n.优点，长处；资产，财产【活用例句】Be careful not to damage other peoples property.小心别损坏别人的财产。/Compare the physical properties of the two substances.比较一下这两种物质的物理特性。contract*vi.缩小；订合同 vt.感染

49、，染上(恶习)；订(约)；n.合同【词根】con(共同)tract(拉，拽)合同将双方损益拉到一起合同【搭配】contract a trade agreement 缔结贸易协议；contract a bad habit 染上恶习【引申】同义compress vt.压缩，压紧reduce vt.缩小shrink v.收缩，(使)皱缩 【听力例句】By 6 oclock that evening,I had signed contracts with seven companies to rent plants from me and pay me a fee to maintain them.到

50、那天晚上 6 点时，我已经和 7 家公司签订了合同。他们从我这里租盆景并且他们雇用我照顾盆景。08.6 同义 shrink*v.退缩，畏缩；起皱；收缩 【联想】经常皱(shrink)眉头易起皱纹(wrinkle)【搭配】shrink from.to.从减少到；shrinking profits 正在缩减的利润；the shrinking yen 正在贬值的日元【引申】同义retreat vi.&n.退却，撤退withdraw v.撤消，撤退 【活用例句】The advertisement says this material doesnt shrink in the wash,but it h