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1、Module5ALessoninaLabPeriod1Introduction&ReadingandVocabulary课时巩固提升 Plantscan’tcommunicatebymovingormakingsounds,asmostanimalsdo.Instead,plantsproducevolatilecompounds(挥发性化合物),chemicalsthateasilychangefromaliquidtoagas.Aflower’ssweetsmell,forexample,comesfromvolatilecompoundsthatthep
2、lantproducestoattractinsectssuchasbugsandbees.Nowscientistshavecreatedaquickwaytounderstandwhatplantsaresaying:achemicalsensor(传感器)calledanelectronicnose.The“e-nose”cantellcompoundsthatcropplantsmakewhenthey’reattacked.Scientistssaythee-nosecouldhelpquicklydetectwhetherplantsarebeing
3、eatenbyinsects.Buttodaytheonlywaytodetectsuchinsectsistovisuallyinspect(检查)individualplants.Thisisachallengingtaskformanagersofgreenhouses,enclosedgardensthatcanhousethousandsofplants.Theresearchteamworkedwithane-nosethatrecognizesvolatilecompounds.Insidethedevice,13sensorschemically
4、reactwithvolatilecompounds.Basedontheseinteractions,thee-nosegivesoffelectronicsignalsthatthescientistsanalyzeusingcomputersoftware.Totestthenose,theteampresenteditwithhealthyleavesfromcucumber,pepperandtomatoplants,allcommongreenhousecrops.Thenthescientistscollectedsamplesofairaroun
5、ddamagedleavesfromeachtypeofcrop.Theseplantshadbeendamagedbyinsects,orbyscientistswhomadeholesintheleaveswithaholepunch(打孔器).Thee-nose,itturnsout,couldidentifyhealthycucumber,pepperandtomatoplantsbasedonthevolatilecompoundstheyproduce.Itcouldalsoidentifytomatoleavesthathadbeendamaged
6、.Butevenmoreimpressive,thedevicecouldtellwhichtypeofdamage—byinsectsorwithaholepunch—hadbeendonetothetomatoleaves.Withsomefine-tuning,adevicelikethee-nosecouldonedaybeusedingreenhousestoquicklyspotharmfulbugs,theresearcherssay.2【语篇概述】植物能相互交流吗?你知道它们的交流方式是怎样的吗?Ⅰ.Skimthepassageandfindth
7、emainideaquickly.Thepassagemainlytellsusane-nose_______________________________________________________________________.答案:whichcantellustheirreactionswhencropplantsareattacked.Ⅱ.Readthepassageagainandchoosethebestanswers.1.Welearnfromthetextthatplantscommunicatewitheachotherby______
8、__.A.makings