2023年英语作文介绍一下美国

2023年英语作文介绍一下美国英语作文介绍一下美国1

TheUnitedStatesofAmerica,alsoknownastheUnitedStates,theU.S.,theU.S.A.,andAmerica,isacountryinNorthAmericathatshareslandborderswithCanadaandMexico,andaseaborderwithRussia.ExtendingfromtheAtlanticOceantothePacificOcean,theUnitedStatesisafederalrepublic,withitscapitalinWashington,D.C.

Thepresent-daycontinentalUnitedStateshasbeeninhabitedforatleast15,000yearsbyindigenoustribes.[1]AfterEuropeanexplorationandsettlementinthe16thcentury,theEnglishestablishedtheirowncolonies—andgainedcontrolofothersthathadbeenbegunbyotherEuropeannations—intheeasternportionofthecontinentinthe17thandearly18thcenturies.On4July1776,atwarwithBritainoverfairgovernance,thirteenofthesecoloniesdeclaredtheirindependence.In1783,thewarendedinBritishacceptanceofthenewnation.Sincethen,thecountryhasmorethanquadrupledinsize:itnowconsistsof50statesandonefederaldistrict;italsohasnumerousoverseasterritories.

Atover3.7millionsquaremiles(over9.5millionkm),theU.S.isthethirdorfourthlargestcountrybytotalarea,dependingonwhetherthedisputedareasofChinaareincluded.Itistheworld'sthirdmostpopulousnation,withnearly300millionpeople.

TheUnitedStateshasmaintainedaliberaldemocraticpoliticalsystemsinceitadopteditsArticlesofConfederationon1March1781andtheConstitution,theArticles'replacement,on17September1787.Americanmilitary,economic,cultural,andpoliticalinfluenceincreasedthroughoutthe20thcentury;withthecollapseoftheSovietUnionattheendoftheColdWar,thenationemergedastheworld'ssoleremainingsuperpower.[2]Today,itplaysamajorroleinworldaffairs.

TheearliestknownuseofthenameAmericaisfrom1507,whenaglobeandalargemapcreatedbytheGermancartographerMartinWaldseemüllerinSaint-Die-des-VosgesdescribedthecombinedcontinentsofNorthandSouthAmerica.Althoughtheoriginofthenameisuncertain[3],themostwidelyheldbeliefisthatexpressedinanaccompanyingbook,CosmographiaeIntroductio,whichexplainsitasafeminizedversionoftheLatinnameofItalianexplorerAmerigoVespucci(AmericusVespucius);inLatin,theothercontinents'nameswereallfeminine.Vespuccitheorized,correctly,thatChristopherColumbus,onreachingislandsintheCaribbeanSeain1492,hadcomenottoIndiabuttoaNewWorld.

TheAmericaswerealsoknownasColumbia,afterColumbus,promptingthenameDistrictofColumbiaforthelandsetasideastheU.S.capital.ColumbiaremainedapopularnamefortheUnitedStatesuntiltheearly20thcentury,whenitfellintorelativedisuse;butitisstillusedpoeticallyandappearsinvariousnamesandtitles.AfemalepersonificationofthecountryisalsocalledColumbia;sheissimilartoBritannia.[4][5][6][7]ColumbusDay,aholidayintheU.S.andothercountriesintheAmericascommemoratingColumbus'October1492landing.

ThetermunitedStatesofAmericawasfirstusedofficiallyintheDeclarationofIndependence,adoptedon4July1776.On15November1777,theSecondContinentalCongreadoptedtheArticlesofConfederation,thefirstofwhichstatedTheStileofthisConfederacyshallbe'TheUnitedStatesofAmerica.'

TheadjectivalanddemonymicformsfortheUnitedStatesareAmerican,apointofcontroversyamongsome.

美利坚合众国,也被称为美国,美国,美国美国,是一个在北美国家,陆地边界与加拿大和墨西哥,和一个与俄罗斯的海上边界。从大西洋到太平洋,美国是一个联邦共和国,为首都的华盛顿特区

当今美国大陆已经居住了至少15000年的土著部落。[1]在16世纪欧洲的探究和殖民之后,英国建立了自己的殖民地和限制他人所起先较之其他欧洲大陆的东部地区在17和18世纪早期。1776年7月4日,在斗争与英国公允治理,十三个殖民地宣布独立。在1783年斗争结束后在英国接受的新国家。自那以来,中国已超过四倍大小:现在由50个州和一个联邦地区;它还有众多的海外领土。

超过370万平方英里(370万多公里),美国是第三或第四大的国家,面积,取决于中国的争议地区。它是世界上第三人口最多的国家,有近3亿人。

美国始终保持着自由民主政治体系的文章,因为它采纳了联盟1781年3月1日,宪法,文章的更换,1787年9月17日。美国的军事、经济、文化和政治影响力增加贯穿整个20世纪,随着苏联解体,冷战结束,美国成为这个世界剩下的唯一超级大国。今日[2],它在世界事务中扮演着重要的角色。

最早运用的名称美国从1507年起先,当一个截止阀和一个大地图创建的瓦尔德泽米勒所绘制德国地理学家马丁在Saint-Die-des-Vosges描述了北美和南美大陆。虽然名字的起源是不确定的[3],最普遍的信仰是表示在一本书,CosmographiaeIntroductio,这也说明了它作为一个女性化版本的拉丁名字的意大利探险家阿美利哥韦斯普奇(绒毛Vespucius);在拉丁语中,其他大陆的名字都是女性。韦斯普奇的理论正确,克里斯托弗·哥伦布到达1492年在加勒比海岛屿,已经不是印度,而是一个“新的世界”。

美洲也被称为哥伦比亚,在哥伦布,促使土地的名字特区留出随着美国资本。美国哥伦比亚高校仍旧是一个受欢迎的名字,直到20世纪初,当它落入相对废弃;但它仍旧是用诗意和出现在不同的名字和头衔。国家也被称为哥伦比亚的女性化身,她是类似于不列颠。哥伦布日,假期在美国和其他国家在美洲纪念哥伦布1492年10月着陆。

“美利坚合众国”这个词第一次被运用在《独立宣言》正式通过1776年7月4日。1777年11月15日,其次届大陆Congreadopted联盟的`文章,第一个表示“本联盟的阶梯美利坚合众国。”

形容词的和demonymic形式对美国是美国人,在一些争议。

英语作文介绍一下美国2

Basedonhistoricaldocuments,modernsurveyandstatistics,aswellastheresultofpredecessorstudies,thetrendandmainprocessofforestdynamicsarerecognized.TheforestareaandforestcoverageratesforeachprovinceofChinafrom1700to1949arees-timatedbackwardbyevery50years.LinkingtheresultwithmodernNationalForestInventorydata,thespatial-temporaldynamicsofChineseforestinrecent300years(AD1700–1998)isquantitativelyanalyzed.Thestudyshowsthatinrecent300years,theforestareaincurrentterritoryofChinahasdeclinedby0.95×108hm2(or9.2%ofthecoveragerate)intotal,withatrendofdecreaseandrecovery.Beforethe1960s,therewasatrendofacceleratedde-scending.Theforestareawasreducedby1.66×108hm2(or17%ofthecoveragerate)in260years.Whileafterthe1960s,therehasbeenarapidincrease.Theforestareaincreasedby0.7×108hm2(or8%ofthecoveragerate)in40years.Thestudyalsoshowsthatthereisasignificantspatialdifferenceinthedynamicsofforest.Theamplitudesofincreasingandde-creasinginwesternChinaarebothsmallerthantheonesineasternChina.Duringtherapiddecliningperiodfrom1700to1949,themostseriousdecreaseappearedintheNortheast,theSouthwestandtheSoutheast,wherethecoveragerateinmostprovincesdroppedover20%.InHeilongjiangProvince,thecoverageratedroppedby50%.InJilinProvince,itdroppedby36%.InSichuanProvinceandChongqingMunicipality,itdroppedby42%.InYunnanProv-ince,itdroppedby35%.Duringtherecoveryperiod1949–1998,thewesternprovinces,mu-nicipalityandautonomousregions,includingNingxia,Gansu,InnerMongolia,Si-chuan–Chongqing,Yunnan,Tibet,XinjiangandQinghai,etc,theincreaseratesareallbelow5%,whiletheeasternprovinces,municipalityandautonomousregions(exceptHeilongjiang,Hubei,Jiangsu–Shanghai)haveachievedanincreaseover5%,amongwhichtheGuang-dong–Hainan,Guangxi,Anhui,Beijing–Tianjin–Hebei,Shandong,