成人高考大专英语模拟题.doc

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1、模拟测试题1PartI．ReadingComprehension(40%)Directions：Therearethreepassagesinthispart．Eachpassageisfollowedbyfivequestions．ForeachquestiontherearefourchoicesmarkedA，B，CandD．YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter．第一部分：阅读理解(40分，每题2分)Pa

2、ssage1Youareunique.Thereare6.5billionpeopleintheworldbutnootherpersonisexactlylikeyou.Besidespeople,therearemillionsofotherlivingthings.Everylivingthingisdifferentfromeachother.Everylivingthingisauniquecombinationofcharacteristics.Whyiseachlivingthingunique?Wheredoitscharacteristicscomefrom?Dop

3、eoplereceivecharacteristicsfromtheirmothersandfathers?How?TheworkofGregorMendelwasespeciallyimportanttohelpustoanswerthesequestions.Mendelstudiedplants,especiallypeaplants.Insomewaytheywereallthesame.Forexample,theyallhadflowers.Butsomehadredflowers,andothershadwhiteflowers.Someweretall,othersw

4、ereshort.Mendelwasespeciallyinterestedinthedifferences.Hewonderedwhyeachplantwasofcertaincolor,shape,size.Heexperimentedwiththousandsofpeaplants,withacarefulrecord.Andhediscoveredsomeinterestingthings.Hemateddifferentpeaplants.First,hematedaredflowerplantwithawhiteflowerplant.Alloftheoffspringp

5、lantshadredflowers.Mendelwascuriousaboutwhathappenedtothewhite.Thenhematedtwooftheoffspringplants.Everytimehedidthis,theyproducedthreeredplantsandonewhiteplant.Therewasthewhiteagain.SoMendelknewthatevenredplantssomehowpassedonwhiteness.Mendeldecidedthatpeaplantscarriedfactors,andtheparentspasse

6、dthesefactorsontotheiroffspring.Todaywecallthesefactorsgenes.Genesaretinypiecesofmatter.Theycarryinformationfromparentstooffspring.Nowweknowthateverypersonisuniqueandonereasonforthisisthateverypersonisauniquecombinationofgenes.1.Inthefirstparagraph,theauthormainlytellsusthat________.A.nootherpe

7、rsonisexactlylikeyouB.thetotalpopulationoftheworldis6.5billionC.everylivingthingisuniqueD.differentpeoplehavedifferentcharacters2.TheworkofGregorMendelwasespeciallyimportantbecause__.A.hehadfirstsetgreatvalueonpeaplantsB.hewasthef