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时间:2020-03-04
《内蒙古2020学年高二英语下学期教学质量调研试题三.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、高二英语下学期教学质量调研试题三分值:120分时间:100分钟)注意事项:1.答卷前,考生务必将自己的姓名、考号填写在答题卡上。2.将答案写在答题卡上。写在本试卷上无效。3.考试结束后,将答题卡交回。第I卷(选择题,共70分)第一部分 阅读理解(共两节,满分40分)第一节:(共15小题;每小题2分,满分30分)阅读下列短文,从每小题所给的四个选项(A、B、C和D)中,选出最佳选项。ATomostofus,medicinecomesfromadrugstore.Butoriginally,muchofthemedicinedevelopedinthelastcenturycamefrom
2、naturalsources:plantsorbacteria.Now,agroupofscientistsinGreatBritainarehopingtodevelopamedicinefrompoisonousinsects.Theyareresearchingwhetherthedeadlyvenom(毒液)ofsomeinsectscanworkagainstbacteria.VenomtechlaboratoryAbout400insectsliveinplasticcontainersintheVenomtechlaboratory.Eachcontainerhasanim
3、ageofaskullandcrossbones.Theimageswarnthatabitefromtheinsectsinsidecanbeanythingfrompainfultodeadly.Thevenomfromtheseinsectscontainshundredsofchemicalcomponents.Eachcomponenthasadifferenttargetandeffect.Medicalresearchersseparatethevenomintoitscomponentparts.Thentheycreatealibraryofthosecomponent
4、s,lookingfortheonesthatcouldbeturnedintonewdrugs.“Someofthemwefoundcankillbacteria,likeEColi,sothey’reveryrelevantatthemomentwheremodernmedicinesarefailing.Andwe’realsofindingvenomthatischangingandkillingcancercells.”Findingnewwaystokillbacteriaisimportanttoresearchers.Onereasonisthat-13-peopleha
5、veusedantibiotics(抗生素)somuchthatsomebacteriacannowresistit.Forexample,tuberculosisusedtobecurablewithantibiotics.Nowitisnot.Howdotheygetthevenomout?Togetasmuchvenomaspossible,researchersfeedtheinsectswellandthenputthemtosleeptemporarily.StevenTrimofVenomtechsaysresearchersanaesthetizetheinsectsto
6、makeremovingthevenomsafer.Afterall,animmobileinsectcannotbite.Researchersthenelectricallystimulatetheinsecttocontract(收缩)themuscleandsqueezethegland(腺).Thepressureproducesasmallamountofvenom.Researchersseparatethevenomintohundredsofproteins.Eachproteincontainsbetweenoneandfivedifferentmolecules(分
7、子).Someday,thosetinymoleculesmightbeturnedintopowerfulnewdrugs.1.Theskullandcrossbonesimagesinplasticcontainersareusedto____________.A.warnpeopleB.comfortpeopleC.frightenpeopleD.encouragepeople2.Whatdoestheunderlinedwo
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