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26.Whatwe know aboutthe dogsin theprogram?A.Theyhaveamonthsof training.totalof 14B.Theyreceiveprofessional trainingbeforegraduation.C.Theyare assigned jobs accordingto theirr trainingtime.D.Thearecompanied bystudentsuntil theygo to work27.Whdoes Benninger thinkof Hearn'sprogram?A.It educatechildrenaboutbeinggrateful.B.It makes dogthe absolutelessentialanimals.C.It snentaldiseases.ervesaseffective cure for nD.It isthe best way tocommunicatduringbandemic.CAs thweatherrwarmsyou migltattract moremosquito bitesprofessor at theJeffreyRiffell,biologyUniversityof Washington,confirms tthat some people alindeed more prone toittenbymosquitoes thanto beingothers.Mosquitoesremarkablygoodattryingtolocatetheir blood.Theypersondrinkare verygood atwhatthey're doing.Theireyes, theirvision,their noseeverythinaboutthemitailoredfofindingus andbiting us.Femalemosquitoeslocatehumanstrackingpathof scentsignalssuch asthesubstancespeoplereleasefrom theirr skin and sweatand thcarbondioxide thatpeoplebreatheout.Mosquitoesare alsodrawn tocertaincolorsthey lovered and black.mosquitoes tendBito dislikewhiteandgreen.Unfortunately,theycan learn.youveryattractiveand theybiteyour blood,theywillgo back toyou because theylearnedthis kind of positieassociationRiffell saidThegood news isthatcan learn toavoid you,so if you'retrying toll learn that and they'll avoidswat抽打)themtheyoualittlebit."Mosquitoesthreecan detectdifferent typesof sugarsources.Oneof thosesourcessfruits,and researchersare tryingcreate scent thatmoto.If the mosquitoesnosquitoeare drawnare attractedperfume,thenresearchecan lacetwithtoxin毒药)thatcan killeinsects.TheCentersDiseaseControlPrevention hascalledthe world's deadliestthemosquitoanimal"becauseinsects canspreaddiseasesto humans. Research hasfound thaclimatechange has led to anincreasedof mosquitob-bornediseases."Thenformation that we'rekind of developingand findingyhas real worldiin thelaboratmplicationsandreally help,think,manycanpeoplemany different partsof the world,Riffell said.28.Whysomeeoplemore attradtive to mosquitoes?A.Dueto human visionand senseof smell.B.Becauseeyes and nose.C.Duetobodyscent andclothincolors.D.Becauseofcarbordioxideand sugar sources.29.Howdo mosquitoeslearnidentifand avoidertainpeople?them1certain colors.AByswattingatedlyB.ByavoidingC.Bycreatingpositivessociation.D.Bylearningfrompast experiences30.What iparagraphmainlabout?mosquitoes.B.TheA.AbeciallovefMosquvays sugar sources attractuitoes.againstmosquitoes.of toxinsD.TheeffectivenessC.Aninnovativeapproachto mosquitocontrolWhatdoesRiffelthink31.of the research?D.IrrelevantA.Perfect.B.Beneficial.C.Pointless.第4页(共8页)【B-025】英语试卷
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