简介：ChinesePresidentJiangZeminsaidonFridaythatChinaandtheUnitedStates,twoinfluentialcountriesintheworld,havecommonresponsibilitiesandinterestsinsafeguardingpeaceandseeurity(安全)intheAsia-Paeifieregionandtheworld,

简介：Inthecomingfouryears,theMiddleEastwillcontinuetobethestrategicfocusoftheUnitedStates.Itcanbeseeninananalysisoftherecentyears'situationthattheBushadministrationratherchoseawarintheMiddleEasttoachieveitsstrategicgoalsthanusednon-militarymeasurestodothesamething.InthefuturetheBushadministrationmightfinditdifficulttodrawbackfromitspolicyontheMiddleEast,whichwillmeanmorelossesthangains.ThiswillprobablycontinuetocausedamagetoboththesoftandhardpoweroftheU.S.,andresultinadownwardtrendoftheU.S.powerforacertainperiodoftime.

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简介：WASHINGTON:USPresidentGeorgeW.BushplansamajorannouncementonspacepolicynextweekaboutsendingAmericanstothemoonandtoMars,officialssaidonThursday.

简介：Ayearofanti-terroristwarhaspassedsincePresidentBushdeclaredwaronAfganistanonOctober7,2001.Inthecourseofthewar,Bush'santi-terroriststrategicthinkinghasbeenenrichedandperfectedgraduallyasthewardevelopsingreaterdepthandwasfinallyformedasso-called“Bushism”,whichhasbecometheguidelinenotonlyfortheAmericanwaronanti-terrorism,butalsofortheBushadministration'sexternalstrategy.Itisexertingprofoundimpactoninternationalpoliticsandinternationalrelations.

简介：HowexactlytoseeAmerica'sforeignpolicyofBush'ssecondterm?Toputitbriefly,ontheissuesscholarsofAmericaandothercountriesincludingChinacanroughlydividedintotwoschools,theyarerespectively"continueorconstantschool"and"changeoradjustschool."TheformerbelievesthatBush'swininthegeneralelectionmeansavictoryofconservatism.Inhissecondterm,PresidentBushwillnotchangethegeneraldirectionofhistoughforeignpolicy.

简介：EversincetheestablishmentoftheShanghaiCooperationOrganization(SCO),therelationshipbetweentheUnitedStatesandtheSCOhasremainedunclear.Despitesomecasualbutnotinstitutionalcontactsbetweeneachother,thebilateralrelationsaremorelikeanemptyshell.However,astwoimportantactorsinCentralAsia,theUnitedStatesandtheSCOdohaveacertainrelationshipintheregion.

简介：SinceU.S.presidentBushadoptedthenewIraqplanonJanuary10,2007forsendingmoretroopstoIraq,thesituationinIraqhasremainedinastateofchaos.TheIraqissuecontinuestostandasafocalpointoftheMiddleEastcrisis,

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简介：FromMarch8thto14th,2007,USPresidentGeorgeW.BushpaidanvisittofiveLatinAmericanstatesofBrazil,Uruguay,Colombia,GuatemalaandMexico.Thisvisit,withthelargestnumberofLatinAmericanstatesvisitedandthelongestdurationsinceBushcametooffice,wasanimportantdiplomaticmovethatdemonstratestheUS'sdeterminationtoregainits'backyard'aswellasmajorpolicyadjustmentsoftheUStowardsLatinAmerica.

简介：身体尺寸变化的二个主要模式在与纬度/高度的移动的关系在ectotherms被记录了。在一些，而，身体尺寸与增加纬度/高度增加，在其它，有增加纬度/高度的身体尺寸减少。这个clinal变化通常被假定被本地改编然而引起到环境条件选择变量(温度，湿度，食谱质量，等等)仍然重重地被辩论。这里，我们在沿着从350～2500m的一个举起坡度从15个地点收集的灌木丛板球Isophyarizeensis的男性的黑暗、苍白的颜色morphs的身体尺寸调查地理变化。用一个信息我们评估的理论途径沿着高度的坡度解释身体尺寸变化的四个不同假设(温度尺寸规则，潮湿坡度假设，季节的限制假设，和主要生产率假设)的相对支持。当黑暗颜色morphs没在身体尺寸显示出变化时，在苍白的颜色morphs的身体尺寸变化与高度显示出一种曲线的关系。在苍白的颜色morphs的身体尺寸变化高度与降水和因此为潮湿坡度和季节的限制假设给强壮的支持的温度seasonality价值被相关。我们的结果在高度的身体尺寸clines和选择的角色的创造在温度上在湿度和seasonality增强坡度的重要性让抵抗在这些clines的建立强调因素。身体尺寸cline是否被观察，可能也取决于个人的phenotypic性质，象着色法一样。