1、课时作业4Unit2SectionReadingandThinking.单句语法填空1Atpresentapublicbicycleisrentedandreturnedfourtimesaday_average.2Iwasvery_tohearthe_newsthatanotherearthquakehadhithishometown(alarm)3Toachieveharmonybetweenhumansandanimals, theworldmustprotectthesebeautiful_(creature)4Thisbook_(intend)forbeginners, andisn
2、owverypopularinChina.5Naturereserveshaveprotectedmany_(endanger)animalsfromdyingout.6Hehadhisbadtooth_(remove)yesterday, sohecanteatanythingtoday.7People_(remind)thatnosmokingisallowedinthesepatientrooms.8Whatsmore, somethingshouldbedonetoraisepeoples_(aware)ofprotectinganimals.9Thats_Ithinkthetripa
3、longtheYangtzeRiverisabetterchoice.10Asisknowntous, thePeoplesRepublicofChinacameinto_(exist)asanindependentcountryin1949.阅读理解AAnimalConservationManyanimalandplantspecieshavebecomeextinctandmanymoreareingreatdanger.Findingwaystoprotecttheearthswildlifeandconserve(保护)thenaturalworldisnowmoreimportant
4、thanever.TheDodoThedodoisaclassicexampleofhowhumancauseddamagetotheearthscreatures.TheflightlessdodowasnativetotheIslandofMauritiusintheIndianOcean.Itlivedonfruitsfallenfromtheislandstreesandlivedfreelyuntilhumansarrivedin1505.Theeasilycontrolledbirdbecameasourceoffoodforsailorsandwasattackedbyanima
5、lsintroducedtotheislandbyhumanssuchaspigs, monkeysandrats.Thepopulationofdodosrapidlydecreasedandthelastonewaskilledin1681.RhinosTherhinohornisahighlyprizeditemforAsianmedicine.Thishasledtotheanimalbeinghuntedinitsnaturalhabitat.OncewidespreadinAfricaandEurasia, mostrhinosnowliveinprotectednaturepar
6、ksandreserves.Theirnumberhasrapidlydecreasedinthelast50years, andrhinosarestillunderconstantthreatfrompoachers(偷猎者)TheGiantPandaThefutureoftheWorldWildFundForNaturessymbolisfarfromcertain.Onlyafewexistinthewild.TheChinesegovernmenthassetuppandareservestoprotectthesebeautifulanimalsandmadethecrimeofp
7、oachingthempunishablewith20yearsinprison.However, thepandasfurissoldatahighpriceintheblackmarketandpoachersareoneofthemostseriousthreatstotheanimalsexistence.TigersThelast100yearshasseena95%decreaseinthenumberofremainingtigerstobetween5,000and7,000andtheBali, Javan, andCaspiantigersarealreadyextinct
8、.TheSouthChinatigerisclosetodisappearing.Liketherhinohorn, tigersbonesandorgansaresoughtafter(寻找)fortraditionalChinesemedicines.Theseitemsaretradedillegallyalongwithtigerskins.1Whatcanwelearnfromthetext?AThedodolackedtheabilitytoprotectitselffromotheranimals.BSailorstotheIslandofMauritiuslivedmainly
9、onthedodo.CThedodousedtobeastronganimalthatlikedfighting.DThedodo, pigs, monkeysandratswerethenativestotheIslandofMauritius.2Whichgroupofthefollowinganimalshasalreadybecomeextinctaccordingtothetext?AThedodo, rhinoandtheGiantPanda.BTherhino, dodoandtheSouthChinatiger.CTherhino, pandaandtiger.DThedodo
10、andtheBali, Javan, andCaspiantigers.3Whatcanserveasacureforcertaindiseases?ATherhinosbones.BThepandasfur.CThetigersbonesandorgans.DThedodosdeliciousmeat.4Whichofthefollowingstatementsistrue?AThenumberofSouthChinatigershasnotreachedcrisispoint.BManyanimalsarethreatenedwithextinctionasaresultofweather
11、change.CPeoplehuntfortheendangeredanimalsforeating.DThepandaistherepresentingimagefortheWorldWildFundForNature.BWhatdoyouusuallydowhenaflyinginsectlandsonyourarm? Mostlikelyyoublowitaway.Butwhatifthatbugwerealadybug(瓢虫)? Thenchancesareyouwouldletitstay.Whatisitaboutladybugsthatwelike?Farmersoncethou
12、ghtladybugswereagoodlucksign.Aladybuginthefieldmeantthatthecrops(庄稼)wouldbesuccessfulandtheweatherwouldbegood.Thefarmersmayhavebeenexaggerating(夸大)aboutwhataverysmallbugcando, butinfactladybugsdohelpoutwiththecrops.Theyeatharmfulinsects.Actually, itisnottheadultladybugthateatstheotherinsects.Itsthel
13、adybuglarvae(幼虫).Ladybugslaytheireggsonleavesthatarecoveredwithaphidsorotherinsects.Whenthelarvaecomeoutoftheeggs, theyareveryhungryandwilleatmites, aphids, mealybugs, greenflies, andothercropdestroyers.Asingleladybuglarvacaneatover1,000aphidsinoneday.Inthe1800s, ladybugswerebroughtallthewayfromAust
14、raliatoCaliforniaandsetfreeamongorangetreesthatweredyingfrombeingeatenbyinsects.Thelittleredandblack“eatingmachines”completelysavedallthetrees.Ladybugsgoabouttheirdailybusinesswithoutworryingmuchaboutanything.Veryfewbirdsorinsectswilleataladybugbecauseitgivesoffsomethingthatisdangeroustoeat.Ladybugs
15、alsoprotectthemselvesbyplayingdead.Theyfalloffleavesandremainverystilluntiltheirenemygoesaway.Sonexttimeyouseealadybug, thinkaboutwhatitmaybeupto.Maybeitisofftosaveanorangetree.Maybeitsnextmovewillbetofalloffaleafandplaydeadorstand_up_toabirdabout100timesitssize.Maybeitslettingyouknowthattheweatherw
16、illbegoodtomorrow.Whoknows? Ladybugsarespecialthatway.5Whatdoweknowaboutmitesandaphids?ATheydoharmtothecrops.BTheyeatmorethantheyshould.CTheyarefoodforadultladybugs.DTheyaretheenemyofladybuglarvae.6WhywereladybugsbroughtfromAustraliatoCaliforniainthe1800s?AToreporttheweatherforfarmers.BToincreasethe
17、irnumber.CTodoresearchonthem.DTosaveorangetrees.7Whatdoestheunderlinedpart“standupto”inthelastparagraphprobablymean?APlaywith.BWorryabout.CGetalongwith.DFightbackagainst.8Whatdoestheauthorthinkoftheladybug?AItisacropdestroyer.BItisagoodlucksign.CItisalittleflyinghelper.DItisabigeatingmachine.阅读七选五Fo
18、rmany, runninghasneverbeentheirfavoriteactivity.Butrunningcancertainlybeagreatwaytogetfitandstayhealthy.Gettingstartedisdifficult._1_Runningcanbeboringattimes, buttheeffectonyourbodyandmindiswellworththatstruggleofjustgettingupandrunning._2_Everymajorcityandmanysmallercitieshaverunningcommunities.Th
19、eyarequiteorganizedandwillingtohelp.Theywillhelpyouseeyourrunninggoalsthrough.Startwithshortdistances.Thoughtherunningcommunitywouldlovetohaveanewlongdistancerunnertomorrow, thefactisthatthatwillnothappenovernight.Tryrunningonemileeverydayforthenext3weeks.Afterthat, addittotwomilesandsoon._3_Takepar
20、tinarace.Bysigningupforaraceinthenearfuture, youwillfocusonagoalandbemotivated(激励)tokeeppracticingforthatevent.Isuggestsigningupfora5kilometerracethatwilltakeplacewithinonemonth._4_5_Motivationisamajorfactorinrunningsuccess.Afriendhelpstopushyouthroughthetimesandmotivateyouinhisownway.AJoinagroup.BO
21、nestepatatime.CBringafriendalong.DMostofyouwillhavenoproblemfindingagreatrace.EShorterdistancesareasteptolongerandmoresuccessfulruns.FTherearesomanyactivitiespeoplewouldratherbedoingthanrunning.GYouwillgetthechancetoseetheseasonalchangeandbreatheinfreshair.课时作业4.单句语法填空1on2.alarmedalarming3.creatures
22、4.isintended5endangered6.removed7.arereminded8.awareness9why10.existence.阅读理解A【语篇解读】这是一篇说明文。文章介绍了四种比较典型的已经灭绝的和濒临灭绝的动物。文章对于每一种动物的数量、所处的危险以及危险产生的原因等方面进行了介绍，使读者感受到保护珍稀动物的紧迫性。1答案与解析：A推理判断题。根据TheDodo部分中的“flightless”“livedonfruitsfallenfromtheislandstrees”和“Theeasilycontrolledbird”等可推测出，渡渡鸟缺少保护自己的能力。2答案与解
23、析：D细节理解题。根据TheDodo部分中的“Thepopulationofdodosrapidlydecreasedandthelastonewaskilledin1681”可判断，渡渡鸟已经灭绝了，再根据Tigers部分中的“theBali，Javan，andCaspiantigersarealreadyextinct”可知，这三种老虎已经灭绝。3答案与解析：C细节理解题。根据Rhinos部分中的“TherhinohornisahighlyprizeditemforAsianmedicine”和Tigers部分中的“Liketherhinohorn, tigersbonesandorgan
24、saresoughtafter(寻找)fortraditionalChinesemedicines”可知，犀牛角和老虎的骨头及器官都有很高的药用价值。4答案与解析：D推理判断题。根据TheGiantPanda部分中的“ThefutureoftheWorldWildFundForNaturessymbolisfarfromcertain”可知，“世界自然基金会”的形象代表是大熊猫。B【读篇解读】本文是说明文。文章是对瓢虫的介绍。5答案与解析：A推理判断题。由第三段中的“mites, aphids, mealybugs, greenflies, andothercropdestroyers”可知，
25、这些都是对庄稼有害的虫子。6答案与解析：D细节理解题。由第四段中的“ladybugs.setfreeamongorangetreesthatweredyingfrombeingeatenbyinsects”可知，十九世纪瓢虫被从澳大利亚带到加利福尼亚州是为了挽救被害虫侵害的橘子树。7答案与解析：D词义猜测题。由倒数第二段中的“Veryfewbirdsorinsectswilleataladybugbecauseitgivesoffsomethingthatisdangeroustoeat.”可知，很少有鸟或昆虫吃瓢虫。再由画线部分后的“abirdabout100timesitssize”可知，
26、当遇见比它大的鸟时，瓢虫会释放某种物质从而对鸟造成威胁。故此处的standupto有“回击、抵御”之意。8答案与解析：C推理判断题。本文旨在介绍瓢虫这种能够吃害虫的昆虫，它们对于庄稼来说是得力的帮手。故C项中的helper最符合瓢虫的这一特性。.阅读七选五【语篇解读】文章介绍了如何养成跑步的习惯。1答案与解析：F根据空后的“Runningcanbeboringattimes”可知，此处应选F项“人们愿意去做很多活动，除了跑步以外”与此形成对应。2答案与解析：A下一句中的“runningcommunities”说明，此处建议加入跑步团体。故选A。3答案与解析：E此句是本段的总结句，E项中的Shorterdistances与第一句中的shortdistances相呼应。4答案与解析：D由本段主旨句可知，本段主要参加跑步比赛，D项中的race和空前提到的race相呼应。5答案与解析：C由下文中的“Afriendhelpstopushyouthroughthetimes”可知，C项正确。