求2010年上海高考英语阅读理解答案！

The2012LondonOlympicshadenoughproblemstoworryabout.Butonemorehasjustbeenadded-acommunicationsblackoutcausedbysolarstorms.

AfteraperiodofcalmwithintheSun,scientistshavedetectedthesignsofafleshcycleofsunspotsthatcouldpeakin2012,justintimeforthearrivaloftheOlympictorchinLondon.

NowscientistsbelievethatthispeakcouldresultinvastsolarexplosionsthatcouldthrowbillionsoftonsofchargedmattertowardstheEarth,causingstrongsolarstormsthatcouldjamthetelecommunicationssatellitesandinteractlinkssendingfiveOlympicbroadcastfromLondon.

TheSun'sactivityhasastronginfluenceontheEarth.TheOlympicscouldbeinthemiddleofthenextsolarmaximumwhichcouldaffectthefunctionsofcommunicationssatellites,saidProfessorRichardHarrison,headofspacephysicsattheRutherfordAppletonLaboratoryinOxfordshire.

Atthepeakofthecycle,violentoutburstscalledcoronalmassejections(日冕物质抛射)occurintheSun'satmosphere,throwingoutgreatquantitiesofelectrically-chargedmatter.Acoronalmassejectioncancarryabilliontonsofsolarmaterialintospaceatoveramillionkilometresperhour.Sucheventscanexposeastronautstoadeadlyamount,candisablesatellites,causepowerfailuresonEarthanddisturbcommunications,ProfessorHarrisonadded.Theriskisgreatestduringasolarmaximumwhenthereisthegreatestnumberofsunspots.

NextweekinAmerica,NASAisscheduledtolaunchasatelliteformonitoringsolaractivitycalledtheSolarDynamicsObservatory(SDO),whichwilltakeimagesoftheSunthatare10timesclearerthanthemostadvancedtelevisionsavailable.

TheRutherfordAppletonLaboratoryhelpedtomakethehigh-techcamerasthatwillcaptureimagesofthesolarflares(太阳耀斑)andexplosionsastheyoccur.

ProfessorRichardHoldaway,thelab'sdirector,saidthattheSDOshouldbeabletoprovideearlywarningofasolarflareorexplosionbigenoughtoaffectsatellitecommunicationsonEarthIfwehaveadvancewarning,we'llbeabletoreducethedamage.Whatyoudon'twantisthingsswitchingoffforaweekwithnoideaofwhat'scausedtheproblem,hesaid.

72.Thephrasecommunicationsblackoutinparagraph1mostprobablyreferstoduringthe2012Olympics.

A.theextinguishingoftheOlympictorch

B.thecollapseofbroadcastingsystems

C.thetransportationbreakdowninLondon

D.thedestructionofweathersatellites

73.Whatcanbeinferredaboutthesolaractivitydescribedinthepassage?

A.ThemostfatalmatterfromthecoronafallsontoEarth.

B.Thesolarstormpeakoccursinthemiddleofeachcycle.

C.IttakesseveralsecondsforthechargedmattertoreachEarth.

D.Thenumberofsunspotsdeclinesaftercoronalmassejections.

74.Accordingtothepassage,NASAwilllaunchasatelliteto_________.

A.takeimagesofthesolarsystemB.provideearlywarningofthunderstorms

C.keeptrackofsolaractivitiesD.improvethecommunicationsonEarth

75.Whichofthefollowingmightbethebesttitleofthepassage?

A.SolarStorms:AnInvisibleKiller

B.SolarStorms:EarthEnvironmentinDanger

C.SolarStorms:ThreateningtheHumanRace

D.SolarStorms:HumanActivitiestoBeTroubled

72.B.此题线索为第二三段的内容。

73.D.

74.C.可从文章第六段直接得出答案。

75.D.通读全文可知整篇文章讨论的是太阳运动所可能会带来的困扰。

我只找到一篇，你先看着O(∩_∩)O~