2023.6.8时文阅读 植物也会“说话”？

难度4星主题语境人与自然-自然与环境■自然地理与生物原文选自wwvv.s疝/加O面力〃2〃g.com、时文阅读植物也会“说话”？人在压力大时会沉默，也会爆发，那么植物在面对压力时会怎样？近日，《细胞》杂志的一项研究揭开了这个隐藏至今的秘密受到压力时.，植物也会“说话”植物发出的声音类似于爆米花爆裂的咔嗒声，音量与人类说话声相当，但频率很高，超出了人耳的听力范围阅读短文并回答此前研究曾记录了植物的超声波振动，但这次研究提供了植物声音在空气中传播的第一个证据让我们一起来看看吧问题According toa newstudy describedby researchersas aglobal breakthrough,plants arenot assilent aswe oncethought theywere.They domake sounds,particularly wheninjured orstressed——just notones thatwe can hear withour ears.Researchersrecorded andanalyzed soundsproduced byplants anddiscovered that they canwive offclicking soundsat avolume similartohuman speech,but toohigh forhuman earsto pickit up.In orderto secludethe plantsto ensurethat anysound pickedup byrecording equipmentcould onlybe comingfrom the plants（声学的）and notthe atmospherearound them,researchers atTel AvivUniversity placedplants inan acousticbox inanenvironment withno backgroundnoise.The planttypes usedin thisstudy weremainly tomato and tobacco plants.Researchers usedrecordingequipment capableof pickingup frequenciesbetween20and250kilohertz,reaching morethan15times higherthan themaximumfrequency theaverage adultcanhear.（脱In thegreenhouse setting,they alsorecorded agroup oftomato and tobaccoplantsas theygrew increasinglydehydrated水的）,and foundthat theirsound outpointincreased steadilyfor thefollowing fourto fivedays afterbeing watered,and thendecreased.Essentially,the thirstiertheplantsgot,the louderthey complained-until theyreached acertain criticalstage ofdehydration,at whichpoint theirvoices quietedas theydried up.The researchersalso foundthat dehydratedtomatoandtobaccoplants producedan averageof about35and11sounds per hour,respectively.Cut tomatoandtobaccoplants made25and15noisesper hour.Healthy plants,on theother hand,produced farfewer sounds,at lessthan oneperhour.Recording thesesounds couldhelp informfarmers aboutwhich oftheir cropsare mostin needof water,allowing formoreprecise iirigation,which couldbe astep forwardfor agriculture.When moreand moreareas areexposed todrought dueto climatechange,ef自dent wateruse becomeseven morecritical forfood security.We believethat humanscan usethis information,giventhe righttools-such assensors thattell growerswhen plantsneed wateringJ saidLilach Hadany,a professorfrom theSchool ofPlantSciences andFood SecurityattheWise Facultyof LifeSciences.

1.In writingparagraph1,the authoraims to.A.state researchmethodsB.present researchfindingsC.clarify thepurposes ofthe researchD.explain thesignificance ofthe research

2.What doesthe underlinedword“seclude“in paragraph2probably meanA.Protect.B.Cultivate.C.Isolate.D.Discover.

3.What dowe knowabout theexperimentA.Plants makesounds morefrequently forlack ofwater.B.Cut plantsproduce loudersounds thandehydrated ones.C.Sounds comingfrom plantsare hardto pickup bydevices.D.Plants producefew soundsin thegreenhouse environment.

4.What doesLilach Hadanythink ofthe researchA.It couldhelp increasethe productionof crops.B.It couldattract peoplesattention tofood safety.C.It couldbe appliedto dealwith globalwarming.D.It couldbe beneficialfor efficientirrigation infarming.参考答案BCAD生词n.传感器sensor语块发出

1.give off干涸

2.dry up★声明原文选自www.ctvnews.ca,试题与内容讲解由天学英语教学研究中心编写s。