英语精读3作业2

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1、阅读理解题第1题(20)分InmanystoriesonTVandinscience-fictionbooks,mentraveltofarawaystars.Theyhavequick,easyjourneys.Butsofar,menhavebeenabletoreachonlytheearth’sownmoon.Supposeamanwantedtoreachadistantstar.Evenifhetraveledhiswholelife,hewouldhavetomovefasterthanthespeedofthelight.Nothingcanmovet

2、hatfastexceptlightitself.Strangethingshappentoanobjectwhenitmovesrapidly.Theobjectweighsmore.Anobjectmovingat86percentofthespeedoflightistwiceasheavyasitisatrest.Astickappearsshorter.Aclockrunsmoreslowly.Amanwouldnotagesofastashewouldontheearth.Lighttravelsmorethan186,000milesasecond,or

3、about11millionmilesaminute.Inoneyear,lighttravelssixtrillionmiles.Thatgreatdistanceiscalledalight-year.Itisusedtomeasuredistanceinspace.ThestarclosesttooursunisAlphaCentauri.Itismorethanfourlight-yearsaway.Ifonetraveledatthespeedoflight,hecouldmakearoundtriptoAlphaCentauriinnineyears.Bu

4、t,evenatthatspeed,hecouldnotreachAlcaid(北斗星)inthehandleoftheBigDipper.Aone-wayjourneytoAlcaidwouldtakealmost200years.1．阅读理解(4.0)分Inthispassagethewords“closesttooursun”meansthestar__B_______.A、theearthweliveonB、AlphaCentauriC、theBigDipperD、themoon2．阅读理解(4.0)分Aone-wayjourneytoAlcaidwouldt

5、ake______C___.A、aboutnineyearsB、lessthanfouryearsC、almost200yearsD、lessthan100years3．阅读理解(4.0)分Whydowemeasurethedistanceinlight-yearsinsteadofmiles?BA、Unitsoflight-yearssoundbetter.B、Usinglight-yearsreducedthenumberoffiguresused.C、Weusedtomeasuredistanceinlight-yearslongago.D、Wedonotmak

6、emistakeswhenweｕｓｅlight-years.4．阅读理解(4.0)分Ifastonemovedatthespeedoflight,it_____A____.A、wouldweightwicemorethanitismotionlessB、wouldweighasmuchasitisonearthC、wouldweighlessthanitisonearthD、wouldnothaveweightatall5．阅读理解(4.0)分Thisstoryismainlyabout___B______.A、thedistancebetweenthesunａｎｄt

7、heotherstarsB、theproblemsoftravelingtofarawaystarsC、whathappenswhenwetravelfasterthanthespeedoflightD、thetoolweｕｓｅwhenwegotofarawaystars第2题(20)分Ifthereisanysinglefactorthatmakesforsuccessinliving,itistheabilitytoprofitbydefeat.EverysuccessIknowhasbeenachievedbecausethepersonwas