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河南省2023-2024学年高二期末(下)测试(24-601B)试题(数学)试卷答案
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Bycontrollingthefrequencyandstrengthoftheelectriccurrent,theresearcherscanstimulateeithersourness,saltinessorbitterness.Theysayupto80%ofpeopleexperiencechangesinsaltinessandsournesswiththedevicesand70%cansensechangesinbitterness.DrRanasinghesaidhewasalsoworkingonwaysofimitatingsweetnessandspicinessbyrapidlyheatingandcoolingthetongue.Itcouldleadtoaspoonthatallowsdessertstotastesweetwhilehavinglowersugarlevelsoraforkthatcangiveacurryextraheatwithouttheneedforextrachilies().DrRanasinghesaid:"Wehavesomecarlyfindingsofimitatingswectness,amint-coolsensationandhotorspicysensations."28.Whatscasoningcutleryhasbeendeveloped?A.Chopsticks.B.Knives.C.Forks.D.Spoons,29.Howdocstheseasoningcutlerywork?A.Itcutsdownsaltinfood.B.Itaddsextraseasoninginfood.C.Itdeliversanelectricshocktothetongue.D.Itweakensourtastesensationinourmind.30.Whatdoestheunderlinedword"relinquishing"inParagraphImean?A.Removing.B.AttractingC.Acquiring.D.Compromising.31.Whatdoesthetextmainlywanttotellus?A.GiveyourselfanelectricshocktomaketakeawayshealthyB.Trytoeatathomeinsteadofhavingtake-outfoodtostayhealthy.C.Makeyourfoodtastesaltierbyusingapairofelectricchopsticks.D.Reducetheamountofsaltinyourfoodtoavoidhealthproblems.0LastyearCongressissuedamoralcalltoactionwhenitorderedtheNationalInstitutesofHealthtoreevaluateitsethicaloversight(伦理上的疏忽)ofgovernment---fundedprimate(灵长类)research.Althoughthescientificcommunitywidelyseesnonhumanprimatesasessentialforadvancesinbiomedicine(theyhavecausedmajorgainsinthefightsagainstAIDSandncurologicaldiseasessuchasParkinson's,forexamplc),rescarchersagreemorccanbedonetotreattheanimalsmorehumanelyandconductresearchlesswastefully.Tothatend,theNIHgatheredfamousscientistslastSeptembertodiscussthefutureofprimate-basedrescarch-andtheyagreedthatdatasharingisthewayforward.Researcherscouldreduceexperimentsonnonhumanprimatesbystudyingdatathathavealrcadybeencollectedtoanswernewquestions,saysDavidO'Connor,apathologistattheUniversityofWisconsin-Madison.O'Connoriswalkingthewalk:hislaboratorystudiestheZikavirusinprimates,andheimmediatelypostsalltheresultsonline.ThegoalistofigureoutwaystofightZikaasquicklyaspossiblewithoutplacinganundue(burdenonresearchprimates.TheSeattle-basedAllenInstituteforBrainScience,whichusesrhesusmacaques,smallSouthAsianmonkeys,tostudythemolecularbasisofbraindevelopment,alsomakesallresultspublic.O'Connorsaysthispracticeshouldbemorewidespreadsothat"researcherswhoareusingthisscarcebutvitalresourcecanlearnasmuchaspossiblefromasfewanimalsasnecessary."Still,heisskepticalthatdatasharingwillcatchonbecauseitwouldrequireachangein"normativebehavior"-science'sstrongcultureofsecrecy,inwhich
15.独脚金内酯为第7大类植物激素。独脚金内酯类似物GR24是首个人工合成的独脚金内酯类植物生长调节剂。如图为GFR24对拟南芥侧枝生长的影响。下列说法正确的是A.据图可知,GR24对野生型拟南芥侧枝的形成具有促进作用B.突变可能造成了拟南芥细胞GR24受体的缺失C.图2是以突变型拟南芥为材料得到的实验结果D.NAA与GR24对侧枝生长的影响机理相似
