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1、2010年普通高等学校招生全国统一考试分类汇编---阅读理解科普知识类Passage1（2010·全国卷I·C）AlongtheriverbanksoftheAmazonandtheOrinocotherelivesabirdthatswimsbeforeitcanfly,flieslikeafatchicken,eatsgreenleaves,hasthestomachofacowandhasclaws(爪)onitswingswhenyoung.Theybuildtheirhomesabout4.6mabovetheriver,animportantfe
2、ature(特征)forthesafetyoftheyoung.Itiscalledthehoatzin.Inappearance，thebirdsofbothsexeslookverymuchalikewithbrownonthebackandcreamandredontheunderside.Theheadissmall,withalargesetoffeathersonthetop,brightredeyes,andblueskin.Itsnearestrelativesarethecommonbirds,cuckoos.Itsmoststriking
3、feature,though,isonlyfoundintheyoung.Babyhoatzinshaveaclawontheleadingedgeofeachwingandanotherattheendofeachwingtip.Usingthesefourclaws,togetherwiththebeak(喙),theycanclimbaboutinthebushes,lookingverymuchlikeprimitivebirdsmusthavedone.Whentheyounghoatzinshavelearnedtofly,theylosethe
4、irclaws.DuringthedriermonthsbetweenDecemberandMarchhoatzinsflyabouttheforestingroupsof20to30birds,butinApril,whentherainyseasonbegins,theycollecttogetherinsmallerlivingunitsoftwotosevenbirdsforproducingpurposes.63．Whatisthetextmainlyabout?A．Hoatzinsindryandrainyseasons.B．Therelativ
5、esandenemiesofhoatzins.C．PrimitivebirdsandhoatzinsoftheAmazon.D．Theappearanceandlivinghabitsofhoatzins.64．Younghoatzinsaredifferentfromtheirparentsinthat．A．theylooklikeyoungcuckoosB．theyhaveclawsonthewingsC．theyeatalotlikeacowD．theyliveonriverbanks65．Whatcanweinferaboutprimitivebir
6、dsfromthetext?A．Theyhadclawstohelpthemclimb.B．Theycouldflylongdistances.C．Theyhadfourwingslikehoatzins.D．Theyhadaheadwithlongfeathersonthetop.66．Whydohoatzinscollecttogetherinsmallergroupswhentherainyseasoncomes?A．Tofindmorefood.B．Toprotectthemselvesbetter.C．Tokeepthemselveswarm.D．
7、Toproducetheiryoung.答案：DBADPassage2（2010·上海·C）The2012LondonOlympicshadenoughproblemstoworryabout.Butonemorehasjustbeenadded-acommunicationsblackoutcausedbysolarstorms.AfteraperiodofcalmwithintheSun,scientistshavedetectedthesignsofafleshcycleofsunspotsthatcouldpeakin2012,justintimef
8、orthearrivaloftheOlympicto
