河北省定州市2016-2017学年高一英语下学期周练试题（承智班，4.9）

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1、河北省定州市2016-2017学年高一英语下学期周练试题（承智班，4.9）一、阅读理解Smokingisharmful.Butassoonasyouquitthehabit,.everythingwi11beOK,right?Wrong.Newresearchhasfoundthatevenifyougiveupsmoking,thedamageithasdonetoyourgenes（基因）willstaythereforamuchlongertime・Intheresearch,ateamofUSscientistsstudiedt

2、hebloodof16,000people.Amongthem,someweresmokers,someusedtosmoke,andtherestwerenon-smokers.Scientistscomparedtheirgenesandfoundthatmorethan7,000genesofsmokershadchanged-anumberthatisone-thirdofknownhumangenes.AccordingtoNBCNews,bothheartdiseaseandcancerarecausedbygeneticc

3、hangos.Somepeoplemayhavehadthechangeswhentheywereborn,butmostpeoplegetthemintheirday-to-day1iveswhiledoingthings1ikesmoking.Whenyoustopsmoking,alotofthesegeneswillreturntonormalwithinfiveyears.Thismcansyourbodyistryingtoheal（治愈）itselfoftheharmfuleffectsofsmoking・Butthech

4、angesinsomeofthegenesstayforlonger.Theycanstayforaslongas30years-It"salmostlikeleavingafootprintonwetcement（水泥）一rtwillalwaysbethere,evenwhenyou，vewalkedawayandwhenthecementbecomesdry.Althoughthestudyresultsmaymakepeopleunhappy,thereisabrightside:thefindingscouldhelpscien

5、tistsinventmedicinototreatgeneticdamagecausedbysmokingorfindwaystotel1whichpeoplehaveheartdiseaseorcancerrisks.1.ThefunctionofParagraph1isto•A.giveanexampleB.introducethetopicofthepassageC.makeanargumentD・showthemainideaofthepassage2.Mostgeneticchangeshappenbecauseof・A.p

6、eople"sconditionatbirthB・environmentalpollutionC・people"sbadlivinghabitsD・heartdiseaseandcancer3.Theunderlinedword“it”inParagraph6refersto•A.thecementB.thefootprintC・theharmfuleffectD・thegeneticchange1.Whichofthefollowingstatemcntsistrue?A.Thefindingsarethefruitofmoretha

7、nthreeyears'research・B.ThefindingshavepreventedmorepeoplefromstartingsmokingC.Thefindingsofferevidencethatadamagedgenecanhealitself.D・Thefindingshelptofindcuresforgeneticdamagecausedbysmoking.MynameisKennNesbittandVmapoet.Istartedwritingpoemsasahobbyin1994.Atthetime,Inev

8、ergaveanythoughttopublishingthem;Ijustwroteformyownamusement・ButitwassomuchfunthatIendedupwritingalotof