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1、老托福阅读真题及答案Passage2 本文和大家分享的是老托福阅读真题之PASSAGE2，练习真题是最重要也最有效的复习方法，大家在复习托福阅读考试的时候一定要对真题重视起来。 托福阅读的思维方式就是托福阅读的出题方式，只有掌握了这种思维方式，才有可能在做题之前，预测到新托福阅读题的出题形式和特点，为找答案节省时间。老托福阅读试题的核心价值，在于其最贴近真题的阅读思维方式。此外老托福阅读真题比新托福IBT阅读文章要短，比较容易适应。这也是大家在备考托福的时候非常重要的一点。因为前期的入手如果能从容易的开始，就会形成一个循序渐进的过程方式，让大家的练习
2、有一个提高的过程。 既然老托福阅读试题有这样的效果，那我们如何利用那有限的真题来达到锻炼自己的目的呢?事实上这就一个办法，就是坚持。本期为大家推荐一篇老托福阅读的真题PASSAGE2，附有原文及答案，希望对托福考生备考有所帮助。 ThegeologyoftheEarth'ssurfaceisdominatedbytheparticularpropertiesofwater.PresentonEarthinsolid,liquid,andgaseousstates,waterisexceptionallyreactive.Itdissolves,tra
3、nsports,andprecipitatesmanychemicalcompoundsandisconstantlymodifyingthefaceoftheEarth. Evaporatedfromtheoceans,watervaporformsclouds,someofwhicharetransportedbywindoverthecontinents.Condensationfromthecloudsprovidestheessentialagentofcontinentalerosion:rain.Precipitatedontothegr
4、ound,thewatertricklesdowntoformbrooks,streams,andrivers,constitutingwhatarecalledthehydrographicnetwork.Thisimmensepolarizednetworkchannelsthewatertowardasinglereceptacle:anocean.Gravitydominatesthisentirestepinthecyclebecausewatertendstominimizeitspotentialenergybyrunningfromhig
5、haltitudestowardthereferencepoint,thatis,sealevel. Therateatwhichamoleculeofwaterpassesthoughthecycleisnotrandombutisameasureoftherelativesizeofthevariousreservoirs.Ifwedefineresidencetimeastheaveragetimeforawatermoleculetopassthroughoneofthethreereservoirs—atmosphere,continent,
6、andocean—weseethatthetimesareverydifferent.Awatermoleculestays,onaverage,elevendaysintheatmosphere,onehundredyearsonacontinentandfortythousandyearsintheocean.Thislastfigureshowstheimportanceoftheoceanastheprincipalreservoirofthehydrospherebutalsotherapidityofwatertransportontheco
7、ntinents. Avastchemicalseparationprocesstakesplacesduringtheflowofwateroverthecontinents.Solubleionssuchascalcium,sodium,potassium,andsomemagnesiumaredissolvedandtransported.Insolubleionssuchasaluminum,iron,andsiliconstaywheretheyareandformthethin,fertileskinofsoilonwhichvegetat
8、ioncangrow.Sometimessoilsaredestroyedand
