高考英語(yǔ)詞匯3500練習(xí)-2022高考英語(yǔ)備考

高考英語(yǔ)詞匯3500練習(xí)

1看詞

rigidfridsid]a.死板的，僵硬的,固執(zhí)的

ripe[raip]a.成熟的，熟的

ripen['raipsn]v.成熟

rise(rose,risen)[raiz]vi.上升,上漲

risk[risk]n./v.危險(xiǎn)，風(fēng)險(xiǎn)，冒險(xiǎn)

riverJriva(r)]n.江；河；水道；巨流

road[rsud]n.路，道路

roast[rsust]v.烤(肉)

rob[rob]v.搶奪，搶劫

robot['rsubot]n.機(jī)器人

rock[rok]n.巖石,大石頭vt.搖，搖晃

rocketn.火箭

role[rsul]n.角色

roll[raul]v.滾動(dòng)，打滾n.面包圈，小圓面包；卷狀物

roller['rsul9(r)]n.滾筒:輯

rollerskatingn滑旱冰

roof[ru:f]n.屋頂，頂部

room[rum]n.房間，室;空間;地方

roosterfru:sts(r)]n.(美)公雞

root[ru:t]n.根，根源，起源

rope[rsup]n.繩，索

rose[raoz]n.玫瑰花

rot[rot]vi.爛；腐敗

rough[rAf]a.粗糙的,粗略的

round[raund]ad.轉(zhuǎn)過(guò)來(lái)prep.環(huán)繞一周，圍著a.圓的；球形的

roundaboutJraundabaut]a.&n.繞道的，不直接的：轉(zhuǎn)盤路

routine[ru:'ti:n]n.常規(guī)，正常順序，無(wú)聊

row[rau]n.（一）排，（一）行v.劃船

royal「roial]a.皇家的，王室的，國(guó)王的，女王的

rubber[以g⑺]n.橡膠；合成橡膠

rubbish['rAbiJ]n.垃圾；廢物

rude[ru:d]a.無(wú)理的,粗魯?shù)?/p>

rugby['rAgbi]n.（英）橄欖球

ruin['ru:m]vt.（使）毀壞；（使）毀滅n.（復(fù)）廢墟；遺跡

rule[ru:l]n.規(guī)則，規(guī)定vt.統(tǒng)治，支配

ruler「ru:la（r）]n.統(tǒng)治者；直尺

run（ran,run）[rAn]vi.跑，奔跑;（顏色）褪色

runnerJrAna（r）]n.賽跑者；操作者；滑行裝置

running[*rAnirj]n.跑步

rush[RAJ]vi.沖，奔跑

Russia[以問(wèn)*n.俄羅斯，俄國(guó)

Russian「rAj（a）n]a.俄國(guó)人的，俄語(yǔ)的n.俄國(guó)人，俄語(yǔ)

S

sacredfseikrid]a.恐懼，擔(dān)心

sacrifice['saekrifais]vt.犧牲

sad[saed]a.（使人）悲傷的

sadness「saednis]n.悲哀，憂傷

safe[seif]a.安全的n.保險(xiǎn)柜

safety「seifti]n.安全，保險(xiǎn)

sail[sell]n.航行v.航行，開(kāi)航

sailing['seilirj]n.航海

sailor「seila（r）]n.水手，海員

saladfsaelsd]n.色拉（西餐中的一種菜）

salary['saelsri]n.薪金，薪水

sale[sell]n,賣，出售

salesgirl['seilzgail]n.女售貨員

salesman['seilzman]n.男售貨員

saleswoman[seilz,woman]n.女售貨員

salt[so：It,solt]n.鹽

saltykolti]a.鹽的，咸的，含鹽的

salute[so1lu:t,sa'lju:t]v.&n.敬禮

same[seim]n.同樣的事a同樣的,同一

sand[saend]n,沙，沙子

sandwichfsaenwids]n.三明治(夾心面包片)

做題

2.根據(jù)英文釋義選用下列單詞填空(每空一詞)

reputation;relief;representative;reservation;relevant;remote；relay;resemble;resign;respond

1)__________afeelingofcomfortwhensomethingfrightening,worrying,orpainfulhasendedor

hasnothappened

2)topassamessagefromonepersonorplacetoanother

3)directlyrelatingtothesubjectorproblembeingdiscussedorconsidered

4)someonewhohasbeenchosentospeak,vote,ormakedecisionsforsomeoneelse

5)theopinionthatpeoplehaveaboutsomeoneorsomethingbecauseofwhathas

happenedinthepast

6)tolooklikeorbesimilartosomeoneorsomething

7)anarrangementwhichyoumakesothataplaceinahotel,restaurant,planeetciskept

foryouataparticulartimeinthefuture

8)toofficiallyannouncethatyouhavedecidedtoleaveyourjoboranorganization

9)farfromtownsorotherplaceswherepeoplelive

10)todosomethingasareactiontosomethingthathasbeensaidordone

答案：根據(jù)英文釋義選用下列單詞填空（每空一詞）

1)relief2)relay3)relevant^representative5)reputation

6)resemble7)reservation8)resign9)remote10)respond

3.根據(jù)漢語(yǔ)意思寫出下列英語(yǔ)短語(yǔ)及詞組

1)提到；關(guān)于；涉及；查閱2)把…稱作…；認(rèn)為…是

3)對(duì)已經(jīng)發(fā)生過(guò)的事情感到后悔4)對(duì)尚未發(fā)生的事感到遺憾

5)記住要做某事6)記得做過(guò)某事

7)與…相關(guān)8)信賴；依靠

9)使聽(tīng)從；使順從10)儲(chǔ)備；備用

3.答案：根據(jù)漢語(yǔ)意思寫出下列英語(yǔ)短語(yǔ)及詞組

1)referto2)referto...as...3)regretdoingsth.4)regrettodosth.5)remembertodosth.

6)rememberdoingsth.7)berelevantto8)relyon/upon9)resignoneself10)inreserve

4.單項(xiàng)選擇

1)Youshouldnotworkallthetime.Youneedsomeafterworkforpleasureorgetrelaxed.

A.recipeB.receptionC.recreationD.relief

2)Ifeveryoneobservestraffic,therewon'tbesomanyroadaccidents.

A.regulationsB.recordsC.reportsD.registers

3)Jerrysaidsomethingstrangeatthemeeting.His_______leftmewonderingabouthisreal

purpose.

A.regardsB.reasonsC.remarksD.conditions

4)IamafraidIcouldnotbepresentmyself,butIwillsendmytothemeeting.

A.representativeB.refereeC.receptionistD.reporter

5)Chinahasgotagood_______forfightingagainstthefluwithitscarefulandsmoothorganization.

A.influenceB.reputationC.impressionD.requirement

6)Itiswrittenclearlyinthethatallpassengersshallcheckontoboardthirtyminutesbefore

theplanetakesoff.

A.referencesB.responsibilitiesC.requirementsD.receipts

7)Whenhetriedtomakea________,hefoundthatthehotelwascompletelyfilledbecauseofa

conference.

A.decisionB.researchC.revisionD.reservation

8)Threeoftheapplesaregood.Therest______gonebad.JustnowIatepartofabigone,andthe

rest_______thrownaway.

A.has;wasB.have;wereC.has;wereD.have;was

9)Thegovernmentplacedonthenumbersofforeigncarsthatcouldbeimportedinorder

toprotectnationalautomobileindustry.

A.revolutionsB.requirementsC.restrictionsD.regulations

10)Thisspecialschoolacceptsalldisabledstudents,educationallevelandbackground.

A.accordingtoB.regardlessofC.inreferencetoD.intermsof

11)Ifyoudon'tclearawaytherubbish,itwilljustaccumulate.

A.normallyB.regularlyC.readilyD.relevantly

12)AgovernmentofficialwasmurderedlastFridayandthepolicearecollectinginformationthatis

tothecase.

A.reliableB.similarC.relevantD.regular

13)---Carlissucha(n)personinouroffice,isn'the?

---Yes.Oncehepromisestodosomething,hellmakeit.

A.religiousB.reliableC.relevantD.capable

14)Inmostcountriestoday,eitherpaperorthingsmadefrommetalare_______forfurtheruse.

A.recordedB.recycledC.removedD.rebuilt

15)People________thesuccessofChang'eIasanothermilestoneinthehistoryofChinesespace

flight.

A.reacttoB.owetoC.reflecttoD.referto

16)Justastheclothesapersonwears,thefoodheeatsandthefriendswithwhomhespendshistime,

hishousehispersonality.

A.resemblesB.recordsC.reflectsD.shapes

17)Ithinkacolddrinkcanyouafteryourlonghotjourney.

A.refreshB.rewardC.reformD.recover

18)Inthatcountry,guestsusuallyfeelthattheyarenothighlyiftheinvitationtoadinner

partyisgivenonlythreeorfourdaysbeforethepartydate.

A.rememberedB.thoughtC.admiredD.regarded

19)ThegirlfromAustraliawantstofortheChinesecourseinthehopeofimprovingher

Chinese.

A.reachB.relateC.registerD.refer

20)Lydiareallyregrets_______outofhighschool.Shehasreallyhadtostruggletomakealiving

becauseofthatdecision.

A.droppingB.todropC.dropD.dropped

21)Shewasovertheagelimit,asaconsequence,herapplicationwas_______.

A.respondedB.recordedC.registeredD.rejected

22)HeandtheSmithsareconnected______marriage.Thatistosay,heisrelated________the

Smiths.

A.with;toB.by;toC.with;withD.by;with

23)Yourdeskiscrowdedwithtoomanyunnecessarythings,includingusedpapersandbooks.You'd

bettersomeofthem.

A.remainB.resistC.removeD.renew

24)Suchamistakecouldhavebeenavoided.Unfortunately,he_______themistakeagainandagain.

A.requestedB.retoldC.remindedD.repeated

25)Whenyouhavefinishedthebook,please_____itontheshelf.

A.replaceB.exchangeC.removeD.request

26)OntheAmericanflag,therearealtogetherfiftystarsandeachstar____onestate.

A.presentsB.expressesC.representsD.replaces

27)Allindividualsarerequired,whoeverheis,thelawsmadebytheirgovernments.

A.obeyingB.obeyedC.obeyD.toobey

28)Thehelicopterarrivedonthescenequicklytothesurvivors.

A.researchB.rescueC.replaceD.reserve

29)Withmorepeoplethetrafficrules,ourcityisbecomingbetterorganized.

A.respectingB.resigningC.respondingD.resisting

30)Thetradeunionintendedtocallontheworkerstogoonstriketo_______thegovernment's

limitationonexports.

A.replytoB.respondtoC.resultinD.resultfrom

4答案：?jiǎn)雾?xiàng)選擇

1)C你不應(yīng)總是工作。工作后你需要娛樂(lè)來(lái)高興或放松一下。

2)A如果每個(gè)人都遵守交通規(guī)則的話，就不會(huì)有如此多的道路交通事故。

3)C杰瑞在會(huì)議上說(shuō)了一些奇怪的話，他的言論使我對(duì)他的真實(shí)意圖產(chǎn)生了疑問(wèn)。

4)A恐怕我不能親自到場(chǎng)，但我會(huì)派我的代表去參加會(huì)議。

5)B在和流感的抗?fàn)幹?，中?guó)由于組織嚴(yán)密，平穩(wěn)運(yùn)作而享有很好的聲譽(yù)。

6)C在要求里清楚地寫道：所有乘客必須在飛機(jī)起飛前30分鐘檢票登機(jī)。

7)D他想預(yù)訂房間時(shí)，卻發(fā)現(xiàn)因?yàn)闀?huì)議這個(gè)旅館已經(jīng)客滿了。

8)D這些蘋果中的三個(gè)是好的，其他的都變壞了。剛才我把一個(gè)大的吃了幾口，把剩下的扔了。

9)C政府對(duì)進(jìn)口的外國(guó)轎車數(shù)量進(jìn)行了限制，是為了保護(hù)國(guó)家的汽車產(chǎn)業(yè)。

10)B這所特教學(xué)校招收所有的殘障學(xué)生，不分教育程度和背景。

11)B如果你不經(jīng)常清理垃圾，這將會(huì)越積越多。

12)C上周五一位政府官員被謀殺了，警方正在搜集與這個(gè)案子相關(guān)的信息。

13)B—-在我們辦公室卡爾就是這樣一個(gè)可以信賴的人，是嗎？-一是的，只要他答應(yīng)做的事情，他一定能做

到。

14)B今天在大多數(shù)國(guó)家，紙或金屬品都可以被回收，以便進(jìn)一步循環(huán)使用。

15)D人們把“嫦娥I號(hào)”(探月衛(wèi)星)的成功發(fā)射看作是中國(guó)航天飛行的又一個(gè)里程碑。

16)C正像人穿衣、吃飯、與朋友共度時(shí)光一樣，他的房子也反映出本人的個(gè)性特征。

17)A漫長(zhǎng)而炎熱的旅程之后，一杯冷飲能令你精神爽快。

18)D在那個(gè)國(guó)家，如果在聚會(huì)前3到4天才送請(qǐng)柬，客人會(huì)感到他們不太被重視。

19)C那個(gè)來(lái)自澳大利亞的女孩想報(bào)名上漢語(yǔ)課，希望提高她的中文水平。

20)A莉迪亞非常后悔中學(xué)時(shí)就輟學(xué)了。正是因?yàn)槟莻€(gè)決定，她不得不為謀生而拼搏。

21)D她超過(guò)了年齡限制，結(jié)果她的申請(qǐng)被拒絕了。

22)B他和史密斯一家已聯(lián)姻，也就是說(shuō)，他和史密斯家有親戚關(guān)系。

23)C你的桌子上堆滿了太多不需要的東西，包括用過(guò)的試卷和書本。你最好拿走一些。

24)D本可以避免犯這樣的錯(cuò)誤。令人遺憾的是，他一次次地重犯。

25)A當(dāng)你看完書時(shí)，請(qǐng)把書放回書架上。

26)C美國(guó)國(guó)旗上共有50顆星，每顆星代表一個(gè)洲。

27)D每個(gè)人，無(wú)論是誰(shuí)，都應(yīng)該遵守政府制定的法律。

28)B直升飛機(jī)快速到達(dá)出事地點(diǎn)去營(yíng)救幸存者。

29)A如果更多的人遵守交通規(guī)則，我們城市就會(huì)更加井然有序。

30)B工會(huì)打算號(hào)召工人罷工來(lái)回應(yīng)政府對(duì)出口產(chǎn)品的限制。

5.根據(jù)漢語(yǔ)意思，用方框內(nèi)所給詞或詞組的正確形式完成下列句子（每空一詞）

shape,relation,relative,relationship,1'elief,victory,wisdom,remark,

bottom,stain,remark,regulation,account,character,weight

regular,over,close,narrowly

prove,fear,intend,remember,forget,take,bury,drop,remove,guarantee,promise,repai

r,replace,lack,remain,require,create,resemble,resist,gain,abandon

onadiet,relyon,take…seriously,remind…of,incase,takenoteof,

replyto,put…intopractice,givebirthto,bringup,resignoneselfto

1)為了保持好體型，弗麗達(dá)女士正在節(jié)食并把參加瑜伽作為常規(guī)練習(xí)。

Inordertokeepagood______,Ms.Fredais_______________andtakesYogaasa

exercise.

2）他有幾個(gè)有錢的親戚住在美國(guó)。其中之一是他的堂兄，是近親關(guān)系。他姑母是他唯一的至親。

Someofhisrich_________liveinAmerica.Oneofthemishiscousin,whichisacloseand

hisauntishisonlyimmediate_______.

3）讓我們感到寬慰的是，他的病經(jīng)證實(shí)不像我們擔(dān)心的那么嚴(yán)重。

Toourgreat,hisillness______nottobeasseriousaswehad________.

4）在勢(shì)均力敵的比賽中，客隊(duì)靠著團(tuán)隊(duì)智慧險(xiǎn)勝主隊(duì)。

team,thevisitingteamhadwonathehometeam

_________inagame.

5）那句話本來(lái)只是個(gè)玩笑，但他把它當(dāng)真了。

Thatwasasajoke,butheit.

6）我還記得小時(shí)候被我叔叔帶到了海邊，在那時(shí)我們忘了帶外套而感到很冷。

ItotheseasidebymyunclewhenIwasachild,andatthattimewe

anovercoatandfeltverycold.

7）由于缺乏資金，能否把這個(gè)想法付諸實(shí)施還要拭目以待。

money,it_________tobeseenwhetherwecan_____theidea.

8）壓在箱底的那些舊照片使我回憶起了我幸福的童年。

Theoldphotosattheofthesuitcasememyhappychildhood.

9）喝咖啡時(shí)候要當(dāng)心，萬(wàn)一你掉下咖啡漬，是很難從新地毯上清理掉的。

Pleasebecarefulwhenyouaredrinkingcoffee___________you______________,whicharehardto

________fromthenewcarpet.

10）這個(gè)冰箱保修期一年。這意味著如果一年內(nèi)它壞了，生產(chǎn)它的公司承諾維修或替換。

Thefridgeisforoneyear.Itmeansthecompanythatmakesittoor

itifitbreakswithinayear.

11）你的講話已受到充分注意，我想不久以后逐一詳細(xì)答復(fù)。

Youhavebeencareful,andIhopewellsooneachof

themindetail.

12）按照規(guī)定里的要求，你不要把你的郵箱賬號(hào)密碼告訴別人。

Itisinthethatyou(should)nottellothersthepasswordofyoure-mail

13)作家的生活常與他們所創(chuàng)造的書中的角色的生活相似。馬克?吐溫也不例外。

Oftenthelivesofwritersthelivesofthethey.MarkTwainwasno

exception.

14)她節(jié)食了，但她抵制不了吃甜食的誘惑，結(jié)果她的體重又增加了。

Shewas,butshecouldn't______eatingsweetfood.Asaresult,her_______was

________again.

15)在她生下一個(gè)女嬰之后不久，就被她丈夫拋棄。她別無(wú)選擇只得認(rèn)命，獨(dú)力撫養(yǎng)這個(gè)嬰兒。

Soonafter__________________ababydaughter,shewasbyherhusband.Shehadno

choicebuttothebabyalone.

5.答案

根據(jù)漢語(yǔ)意思，用方框內(nèi)所給詞或詞組的正確形式完成下列句子(每空一詞)

1)shape;onadiet;regular2)relations;relationship;relative3)relief;proved;feared

4)Relyingon;wisdom;victoryover;narrowly;close5)remark;intended;took;seriously

6)rememberbeingtaken;forgottotake7)Lacking;remains;put;intopractice

8)buried;bottom;reminded;of9)incase;dropstains;remove

10)guaranteed;promises;repair;replace11)remarks;taken;noteof;replyto

12)required;regulations;account13)resemble;characters;create

14)onadiet;resist;weight;gained

15)givingbirthto;abandoned;resignherselftobringingup

6.

第二部分閱讀理解(共兩節(jié)，滿分60分)

第一節(jié)(共15小題;每小題2分，滿分30分)

閱讀下列短文，從每題所給的A、B、C和D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。

C

Whilewemaythinkitfeelsgoodtocomplain,complaininghassomebadeffectsassociatedwithit

Whyisn'tcomplainingbeneficial?Researchshowsthatitconnectsourbrainwithnegativity.Thebrainis

designedtoworkefficiently.Thismeansthatwhenwerepeatathought,negativeorpositive,thenervecells

formabridgebetweeneachothertopassinformationinahigherspeed.Therefore,thenexttimewehavea

similartypeofthought,itismoreeasilypassed.Thisexplainswhycertainthoughtpatternsbecomehabits.

Yettheharmfuleffectsdon'tstopthere.Astudyshowsthatcomplainingcausesthehippocampus（海馬區(qū)）,

whichplaysavitalroleinproblem-solving,tobecomesmaller.

Inadditiontocausingbraindamage,complainingalsoreleasesastresshormone:cortisol,akindof

chemicalthebodyproduceswhenwemeetwithsomedanger.Constantlyhavingahighlevelofcortisolresults

inhighbloodpressure,highbloodsugar,andlowerimmunity（免疫力）.

Theilleffectsofourcomplainingaren'tjustlimitedtoourselves:theyalsoinvolvethosearoundus.We

tendtomirrorthemoodsofourfriends.Forthisreason,weshouldbecautiousabouthavingstubborn

complainersinourcircleofcompanions.

Thebestwaytodealwithconstantnegativityistodevelopasenseofgratitude（感，恩J.Justlikecomplaining

actsasapoison,gratitudeactsasamedicine.Researchshowsitlowerscortisollevelsby23percent,aswellas

reducesbloodpressureandbloodsugar.ltalsodecreasestirednessanddepression.Gratitudeistheperfect

cureforcomplaining,abehaviorthatstealsourbrainpower,happinessandphysicalwell-being.

Whathaveyouobservedabouttheeffectsofcomplaininginyourownlifeorinthelivesofothers?Have

younoticedthatwhenyouaregrateful,youfeelbetterallover?Pleaseshareyourthoughtsinthecomments

sectionbelow.

8.WhatdoPara2-3mainlytalkabout?

A.Thediseasescausedbycomplaining.

B.Thedecreaseofavitalpartofourbrain.

C.Thebadeffectsofcomplainingonbrainpower.

D.Thereasonwhycertainthoughtpatternsbecomehabits.

9.Whatcanweknowaboutcortisolfromthepassage?

A.GratitudeisaneffectivecureforCortisol.

B.Ourbodyproducecortisolwhenwefeelexited.

C.Cortisolisachemicalthatcancausebraindamage.

D.Havingahighlevelofcortisolcanleadtomanyhealthproblems.

lO.Whatattitudedoesthewritertaketostubborncomplainers?

A.Grateful.B.Tolerant.C.Disapproving.D.Skeptical.

11.Wherecanthepassagemostprobablyappear?

A.Inanewspaper.B.Inamedicalreport.C.Onawebsite.D.Inaradioprogram.

【答案】8.C9.D10.Cll.C

【文章大意】本文一?篇說(shuō)明文。一項(xiàng)研究表明，抱怨會(huì)導(dǎo)致在解決問(wèn)題時(shí)起重要作用的海馬區(qū)變小。除了造成大腦損傷，

抱怨還會(huì)釋放一種壓力荷爾蒙:皮質(zhì)醇，持續(xù)高水平的皮質(zhì)醇會(huì)導(dǎo)致高血壓、高血糖和免疫力下降。處理持續(xù)負(fù)面情緒的

最好方法是培養(yǎng)一種感恩的意識(shí)。

8.【命題意圖】考查主旨大意題。根據(jù)第三段Yettheharmfuleffectsdon'tstopthere.Astudyshowsthat

complainingcausesthehippocampuswhichplaysavitalroleinproblem-solving,tobecomesmaller.（然而,

有害影響還不止于此。一項(xiàng)研究表明，抱怨會(huì)導(dǎo)致在解決問(wèn)題時(shí)起重要作用的海馬區(qū)變小。）以及第二段主要解釋「抱

怨如何對(duì)大腦產(chǎn)生消極影響的。故可知第2-3段主要談?wù)摫г箤?duì)腦力的不良影響。故選C。

9.選D.【命題意圖】考查細(xì)節(jié)理解題。根據(jù)第四段最后一句Constantlyhavingahighlevelofcortisolresultsinhigh

bloodpressure,highbloodsugar,andlowerimmunity.（持續(xù)高水平的皮質(zhì)醇會(huì)導(dǎo)致高血壓、高血糖和免疫力下降。）

可知皮質(zhì)醇水平過(guò)高會(huì)導(dǎo)致許多健康問(wèn)題。故選D。

10.選C.【命題意圖】考查推理判斷題。根據(jù)倒數(shù)第三段最后一句Forthisreason,weshouldbecautiousabouthaving

stubborncomplainersinourcircleofcompanions.（基于這個(gè)原因，我們應(yīng)該小心在我們的朋友圈里有固執(zhí)的抱怨

者。）可知作者對(duì)于固執(zhí)抱怨者的態(tài)度是不贊成、反對(duì)的。故選C。

11.選C1命題意圖拷查推理判斷題。根據(jù)文章最后一句Pleaseshareyourthoughtsinthecommentssectionbelow.

（請(qǐng)?jiān)谙旅娴脑u(píng)論區(qū)分享你的想法。）可知文章最有可能是出現(xiàn)在一張網(wǎng)頁(yè)上。故選C。

D

Acheapprintedsensorcouldtransmitwildfirewarnings.Wildfireshaverecentlydestroyedregions

acrosstheworld,andtheirgravityisincreasing.Hopingtoreduceharm,researchersledbyYapei

Wang,aChinesechemistofRenminUniversity,saytheyhavedevelopedaninexpensivesensortodetectsuchfires

earlierwithlesseffort.

Currentdetectionmethodsrelyheavilyonhumanwatchfulness,whichcandelayaneffective

response.Mostwildfiresarereportedbythegeneralpublic,andotheralertscomefromroutinefoot

patrolsandwatchtowerobservers.Passingplanesandsatellitesalsooccasionallyspotsomething,but

“thefirefirstappearsontheground,“Wangsays."Whenyouseethefirefromthesky,itistoolate.”

Theteamsaysitsnewsensorcanbeplacedneartreetrunks'basesandsendawirelesssignaltoa

nearbyreceiverifthereisadramatictemperatureincrease.Thatheatalsopowersthesensoritself,

withoutreplacingbatteries.Theteamprintedthesubstancesontoordinarypapertocreateasensor

forjust$0.40.

Butimprovingcoordinationamongthedifferentagenciesinvolvedinfirefightingisevenmore

crucialtoaddress,saysGrahamKent,anearthquakeexpertattheUniversityofNevada,Reno,whowas

notpartofthestudy.KentisdirectorofALERTWildfire,anetworkthatusescamerasandcrowd

sourcingtowatchforfiresinCalifornia,Nevada