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英语六级词汇考前指导试题附解析英语六级词汇考前指导试题附解析2017学问二字，须要拆开看，学是学，问是问。以下是小编为大家搜索整理的英语六级词汇考前指导试题附解析2017，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!Questions36to45arebasedonthefollowingpassage.Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturingrapidly.Between1997and2005,investmentinnanotechresearchanddevelopmentbygovernmentsaroundtheworld____36____from$432milliontoabout$4.1billion,andcorrespondingindustryinvestmentexceededthatofgovernmentsby2005.By2015,productsincorporatingnanotechwillcontributeapproximately$1trilliontotheglobaleconomy.Descriptionsofnanotechtypicallycharacterizeitpurelyintermsoftheminutesize-assembliesbetweenthesizeofanatomandabout100moleculardiameters(分子直径).That____37____makesitsoundasthoughnanotechismerelylookingtouseinfinitelysmallerpartsthanconventionalengineering.Butrearrangingtheatomsandmoleculesleadstonew____38____Oneseesatransitionbetweenthefixedbehaviorofindividualatomsandmoleculesandtheadjustablebehaviorofcollectives.Thus,nanotechnologymightbetterbeviewedasthe____39____ofquantumtheory(量子论)andothernanospecificphenomenatofundamentallycontrolthepropertiesandbehaviorofmatter.Thesecondstage,whichbeganin2005,focusesonactivenanostructuresthatchangetheirsize,shape,conductivityorotherpropertiesduringuse.Newdrugdeliveryparticlescouldreleasetherapeutic(治疗的)moleculesinthebodyonlyaftertheyreachedtheir____40____diseasedtissues.Electroniccomponentssuchastransistorsandamplifierswithadaptivefunctionscouldbereducedtosingle,complexmolecules.Startingaround2010,workerswill____41____expertisewithsystemsofnanostructures,directinglargenumbersofintricatecomponentstospecifiedends.Oneapplicationcouldinvolvetheguidedselfassemblyofnanoelectroniccomponentsintothreedimensionalcircuitsandwholedevices.Medicinecouldemploysuchsystemstoimprovethetissuecompatibilityofimplants,orperhapseventobuild____42____organs.After2015-2020,thefieldwillincludemolecularnanosystems.Whereasbiologicalsystemsarewaterbasedandmarkedlytemperaturesensitive,thesemolecularnanosystemswillbeabletooperateinaf
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