山西省忻州市北聯(lián)合學(xué)校2022年高二英語(yǔ)月考試題含解析

山西省忻州市北聯(lián)合學(xué)校2022年高二英語(yǔ)月考試題含解析一、選擇題1.Yourhealthwill_____

ifyoueattoolittleandworktoohardformonths.A.breakup

B.breakthrough

C.breakdown

D.breakoff參考答案：C2.Thechildismuchtooyoung;Iobject____

__himaloneathome.A．toleave

B.leave

C.leaving

D.toleaving參考答案：D略3.Anecosystemconsistsofthelivingandnonlivingthingsinanarea______interactwithoneanother.A.that B.where C.who D.what參考答案：A4.

today,hewouldgettherebyFriday.A.Isheleaving

B.Ifheisleaving

C.Ifheweretoleave

D.Ifheleaves參考答案：C5._____________othergoodstudents,theteacherthinks,Hankis____________student.A.Comparedwith;amostsatisfied

B.Comparedto;themostsatisfied

C.Comparedto;thesatisfying

D.Comparedwith;amoresatisfying參考答案：D6.Wedonothaveenoughmoney.______,wecannotaffordtobuythenewcar.A.However

B.Anyway

C.Therefore

D.Though參考答案：C7.Ifwearenot_______theprogresswehavemade,wewillhavegreatersuccess.A.interestedin B.strictin C.popularwith D.contentwith參考答案：D試題分析：考查短語(yǔ)辨析。beinterestedin對(duì)什么感興趣，bestrictin對(duì)某事嚴(yán)格，bepopularwith在什么當(dāng)中受歡迎，becontentwith對(duì)什么滿足，句意：如果我們對(duì)我們?nèi)〉玫倪M(jìn)步不滿足，我們將會(huì)取得更大的進(jìn)步。所以選D。8.Hemadeamistake,butthenhecorrectedthesituation________itgotworse.A.until

B.when

C.before

D.as參考答案：C略9.Thepresidentspokeatthebusinessmeetingfornearlyanhourwithout______hisnotes.A.bringingup

B.referringto

C.lookingfor

D.tryingon參考答案：B10.Theirmiserablestayseemedtobepunishment____justiceandfreedomtothem.A.morethan

B.otherthan

C.ratherthan

D.lessthan參考答案：C11._____privatecarsarebringingusconvenience,theymayalsocausemoretrafficaccidentsandpollution.A.While

B.As

C.If

D.Since

參考答案：A12.Theskybecamedarkeranditwas________thatweweregoingtohaverain.A.false

B.elasticC.factor

D.evident參考答案：D句意：天空變得更黑了，顯然要下雨了。evident指根據(jù)某些跡象或事實(shí)加以一定的推理后顯而易見(jiàn)，本句根據(jù)“天空變得更黑了”這一跡象推出“顯然要下雨了”。false“假的；虛偽的”；elastic“有彈性的”；factor“因素；要素”。13.Inthereading-room,wefoundWinifred____atadesk,withherattention_____onanovel.

A.sitting;fixing

B.seating;fixed

C.sitting;fixed

D.seated;fixing參考答案：C略14.Whymustyoukeepcomplaining__________?A.allthetime

B.attimes

C.forthetimebeing D.atonetime參考答案：A15.RecentlyIboughtanancientChinesevase,_____wasveryreasonable..

A.whichpriceB.itsprice

C.thepriceofwhich

D.thepriceofwhose參考答案：C16.Soloudly_____that______hearherclearly.A.didshespeak;couldeveryone

B.didshespeak;everyonecouldC.shespoke;couldeveryone

D.shespoke;everyonecould參考答案：B17.Itsnowedheavilylastnight,thus________thetrafficproblemstoday.

A.causing

B.caused

C.havingcaused

D.havingbeencaused參考答案：A18.—Howlucky!Thetouriststoppedatthelastmoment..—Indeed!Onemorestepandhe________offthecliff（懸崖）A.wouldfall

B.wouldhavefallen

C.mayhavefallen

D.hadfallen參考答案：B【詳解】考查虛擬語(yǔ)氣。本句是一個(gè)含蓄條件句，表示與過(guò)去事實(shí)相反的虛擬語(yǔ)氣，使用“情態(tài)動(dòng)詞+havedone”結(jié)構(gòu)，這一結(jié)構(gòu)中的情態(tài)動(dòng)詞不能使用may。句意：—真幸運(yùn)??！在最后一刻，這位游客停下來(lái)了。—的確。再走一步，他就會(huì)摔下懸崖。故B項(xiàng)正確。【點(diǎn)睛】本題考查的是含蓄條件句的虛擬語(yǔ)氣，實(shí)際上虛擬語(yǔ)氣是高考每年的必考點(diǎn)，用法較多，平時(shí)學(xué)習(xí)應(yīng)積累鞏固。1.與現(xiàn)在事實(shí)相反：Withoutair,mancouldn'texistontheearth.沒(méi)有空氣的話，人類將不能在地球上生存。謂語(yǔ)動(dòng)詞：would/could/might(not)dosth.2.與過(guò)去事實(shí)相反：Withoutyourhelp,Iwouldhavefailedtheexamlastweek.沒(méi)有你幫助的話，我上周考試可能就通不過(guò)了。謂語(yǔ)動(dòng)詞：would/could/might(not)havedonesth.3.與將來(lái)事實(shí)相反：Withoutyourticket,Iwouldn'tbeabletogototheconcerttomorrow.要是沒(méi)有你的票的話，我明天就不能去聽(tīng)音樂(lè)會(huì)了。謂語(yǔ)動(dòng)詞：would/could/might(not)dosth.19.Itturnedoutthatshewonthefirstprizeinthecompetition,whichwasbeyondher

.

A.expectations

B.reputations

C.contributions

D.celebrations參考答案：A二、完型填空20.Childrenfindmeaningsintheiroldfamilytales.

WhenStephenGuyer’sthreechildrenweregrowingup,hetoldthemstoriesabouthowhisgrandfather,abanker,

41

allinthe1930s,butdidnotlosesightofwhathevaluedmost.Inoneofthedarkesttimes

42

hisstrong-mindedgrandfatherwasnearly

43

,heloadedhisfamilyintothecarand

44

themtoseefamilymembersinCanadawitha

45

,“therearemoreimportantthingsinlifethanmoney.”The46

tookonanewmeaningrecentlywhenMr.Guyerdownsizedtoa

47

housefromamoreexpensiveandcomfortableone.Hewas48

thathischildren,adaughter,15,andtwins,22,wouldbeupset.Tohissurprise,theyweren’t.

49

,theirreactionechoed（與---共鳴）theirgreat-grandfather’s.Whatthey

50

washowwarmthepeoplewereinthehouseandhow

51

oftheirheartwasaccessible.

Manyparentsarefindingfamilystorieshavesurprisingpowertohelpchildren

52

hardtimes.Storytellingexpertssaythephenomenonreflectsagrowing53

intellingtales,evidencedbyariseinastorytellingeventsandfestivals.

Auniversity

54

of65familieswithchildrenagedfrom14to16foundkids’abilityto55

parents’storieswaslinkedtoalowerrateofangerandanxiety.

The56

istellingthestoriesinawaychildrencan57

.We’renottalkinghereaboutthekindofstorythat

58

,“WhenIwasakid,Iwalkedtoschooleverydayuphillbothways,barefootinthesnow.”Instead,weshouldchooseastorysuitedtothechild’s59

,andmakeeyecontacttocreate“apersonalexperience”,Wedon’thavetotellchildren60

theyshouldtakefromthestoryandwhatthemoralis.”41.A.missed

B.lost

C.forgot

D.ignored42.A.when

B.while

C.how

D.why43.A.friendless

B.worthless

C.penniless

D.homeless44.A.took

B.allowed

C.expected

D.fetched45.A.hope

B.belief

C.suggestion

D.promise46.A.report

B.agreementC.arrangementD.tale47.A.small

B.large

C.new

D.grand48.A.surprised

B.annoyed

C.worried

D.disappointed49.A.Therefore

B.Besides

C.Otherwise D.InsteadKs550.A.talkedaboutB.heardaboutC.wroteabout

D.caredabout51.A.many

B.much

C.little

D.few52.A.through

B.over

C.behind

D.beyond53.A.argument

B.skill

C.anxiety D.interest54.A.study

B.design

C.committeeD.staff55.A.retell

B.provide

C.support

D.refuse56.A.trouble

B.gift

C.trick

D.fact57.A.perform

B.write

C.question

D.hear58.A.means

B.begins

C.ends

D.proves59.A.activities B.needs

C.judgmentsD.habits60.A.what

B.that

C.which

D.whom參考答案：41-45BACAB

46-50DACDD

51-55BADAAK56-60CDBBA21.Ifweredoubleourefforts,ourdreamwillcometrue.Chenzuobinhad___36___for13yearsalready.Finally,hedecidedtobecomea___37___again.BorninamountainvillageinAnhuiprovince,ChenZuobinwalkedoutofthe___38___forstudywhenhewas19.Thoughhehada___39___lifeasacreativedirectorofaninternationalagencyinShanghai,hecouldn’t___40___theanxietyappearinginhisdreams.“I___41___aboutcountlessbranchroadsseveraltimesayear,Ididn’tknowwhichoneleadsto___42___.Itmademefeelterrible.”O(jiān)neday,

ChenZuobinwokeupandsaidtohiswife,”Iwanttogohome.”___43___beingsurprised,hiswifesaid,“___44___yourheart.Don'tworryaboutme.“Theyoungcouplereturnedtotheirhometownand___45___theRealFoodFarmjusttoleadarealandsimplelife.ChenZuobinshookoffthe___46___andtirednessfromtoomuch___47___inthecity.Onlyinthemountainscantheyenjoythe___48___air.Thereisn’tthesmelloftailgas,butthesmellof___49___whenitshinesoverthewoods.Theylivealifeof“eatinghealthilyand___50___well.“Inatimewheneating___51___becomesaluxury(奢侈)inthe___52___life,it’strulyaright

waytoreturntothe___53___.“Lifeisajourneyof___54___theproperway.“saidChenZuobin.Thosedreamsaboutbranchroadshave___55___becausehehasfoundhisownpath.36.A.dreamed

B.lived

C.struggled

D.hesitated37.A.villager

B.worker

C.manager

D.farmer38.A.mountains

B.nation

C.deserts

D.city39.A.tough

B.successful

C.simple

D.uncomfortable40.A.remove

B.remember

C.expose

D.imagine41.A.forgot

B.worried

C.dreamed

D.cared42.A.Rome

B.home

C.future

D.school43.A.Intermsof

B.Inspiteof

C.Inchargeof

D.Insteadof44.A.Concern

B.Observe

C.Follow

D.Open45.A.left

B.sold

C.built

D.ruined46.A.anxiety

B.loneliness

C.sadness

D.joy47.A.desire

B.workload

C.relation

D.money48.A.warm

B.thin

C.smelly

D.fresh49.A.water

B.dust

C.sunlight

D.smog50.A.playing

B.sleeping

C.dressing

D.studying51.A.carefully

B.quickly

C.properly

D.happily52.A.urban

B.real

C.country

D.family53.A.nature

B.wildness

C.beginning

D.simplicity54.A.changing

B.directing

C.leading

D.finding55.A.fadedaway

B.passedaway

C.putaway

D.runaway參考答案：36.C

37.D

38.A

39.B

40.A

41.C

42.B

43.D

44.C

45.C

46.A

47.B

48.D

49.C

50.B

51.C

52.A

53.D

54.D

55.A本文是一篇記敘文。文章講述的是陳作斌出生在安徽省的一個(gè)山村，19歲時(shí)走出山林求學(xué)。奮斗了13年，雖然他在上海一家國(guó)際廣告公司擔(dān)任創(chuàng)意總監(jiān)，生活很成功，但他無(wú)法消除夢(mèng)中出現(xiàn)的焦慮。最后，他決定再次成為一名農(nóng)民。這對(duì)年輕的夫婦回到了他們的家鄉(xiāng)，建立了真正的糧食農(nóng)場(chǎng)，只是為了過(guò)上真正簡(jiǎn)單的生活。陳作斌說(shuō)，“人生是一段尋找正確道路的旅程”?！?6題詳解】考查動(dòng)詞。A.dreamed夢(mèng)想；

B.lived居住；

C.struggled掙扎；

D.hesitated猶豫不決。根據(jù)Ifweredoubleourefforts,ourdreamwillcometrue.Chenzuobinhad___1___for13yearsalready.可知，如果我們加倍努力，我們的夢(mèng)想就會(huì)實(shí)現(xiàn)。陳作斌已經(jīng)奮斗了13年。故選C?！?7題詳解】考查名詞。A.villager村民；

B.worker工人；

C.manager經(jīng)理；

D.farmer農(nóng)民。根據(jù)下文Theyoungcouplereturnedtotheirhometownand___10___theRealFoodFarmjusttoleadarealandsimplelife.可知，F(xiàn)inally,hedecidedtobecomea___2___again.最后，他決定再次成為一名農(nóng)民。故選D?！?8題詳解】考查名詞。A.mountains大山；

B.nation民族，國(guó)家；

C.deserts沙漠；

D.city城市。根據(jù)BorninamountainvillageinAnhuiprovince,ChenZuobinwalkedoutofthe___3___forstudywhenhewas19.可知，陳作斌出生在安徽省的一個(gè)山村，19歲時(shí)走出山林求學(xué)。故選A?！?9題詳解】考查形容詞。A.tough艱苦的，困難的；

B.successful成功的；

C.simple簡(jiǎn)單的；

D.uncomfortable不舒適的。根據(jù)Thoughhehada___4___lifeasacreativedirectorofaninternationalagencyinShanghai,hecouldn’t___5___theanxietyappearinginhisdreams.可知，雖然他在上海一家國(guó)際廣告公司擔(dān)任創(chuàng)意總監(jiān)，生活很成功，但他無(wú)法消除夢(mèng)中出現(xiàn)的焦慮。結(jié)合句意可知答案為B?！?0題詳解】考查動(dòng)詞。A.remove除去，移除；

B.remember記得；

C.expose揭露，揭發(fā)；

D.imagine想象。根據(jù)Thoughhehada___4___lifeasacreativedirectorofaninternationalagencyinShanghai,hecouldn’t___5___theanxietyappearinginhisdreams.可知，雖然他在上海一家國(guó)際廣告公司擔(dān)任創(chuàng)意總監(jiān)，生活很成功，但他無(wú)法消除夢(mèng)中出現(xiàn)的焦慮。結(jié)合句意可知答案為A?！?1題詳解】考查動(dòng)詞。A.forgot忘記；

B.worried擔(dān)憂；

C.dreamed夢(mèng)想；

D.cared關(guān)心。根據(jù)“I___6___aboutcountlessbranchroadsseveraltimesayear,Ididn’tknowwhichoneleadsto___7___.Itmademefeelterrible.”可知，我一年好幾次夢(mèng)見(jiàn)無(wú)數(shù)的岔路口，我不知道哪條路能回家。這讓我感覺(jué)很糟糕。結(jié)合句意可知答案為C?！?2題詳解】考查名詞。A.Rome羅馬；

B.home家；

C.future未來(lái)；

D.school學(xué)校。根據(jù)“I___6___aboutcountlessbranchroadsseveraltimesayear,Ididn’tknowwhichoneleadsto___7___.Itmademefeelterrible.”可知，我一年好幾次夢(mèng)見(jiàn)無(wú)數(shù)的岔路口，我不知道哪條路能回家。這讓我感覺(jué)很糟糕。結(jié)合句意可知答案為B?！?3題詳解】考查詞組。A.Intermsof按照，在------方面；

B.Inspiteof盡管；

C.Inchargeof負(fù)責(zé)，主管；

D.Insteadof代替。根據(jù)Oneday,

ChenZuobinwokeupandsaidtohiswife,”Iwanttogohome.”___8___beingsurprised,hiswifesaid,“___9___yourheart.Don'tworryaboutme.”可知，一天，陳作斌醒來(lái)對(duì)妻子說(shuō):“我想回家。”他的妻子非但沒(méi)有感到驚訝，反而說(shuō):“跟著你的心走?！眲e為我擔(dān)心。"結(jié)合句意可知答案為D?！?4題詳解】考查動(dòng)詞。A.Concern涉及；

B.Observe觀察；

C.Follow跟隨；

D.Open打開(kāi)。根據(jù)Oneday,

ChenZuobinwokeupandsaidtohiswife,”Iwanttogohome.”___8___beingsurprised,hiswifesaid,“___9___yourheart.Don'tworryaboutme.”可知，一天，陳作斌醒來(lái)對(duì)妻子說(shuō):“我想回家?！彼钠拮臃堑珱](méi)有感到驚訝，反而說(shuō):“跟著你的心走?！眲e為我擔(dān)心。"結(jié)合句意可知答案為C?！?5題詳解】考查動(dòng)詞。A.left離開(kāi)；

B.sold賣；

C.built建造；

D.ruined毀掉。根據(jù)Theyoungcouplereturnedtotheirhometownand___10___theRealFoodFarmjusttoleadarealandsimplelife.可知，這對(duì)年輕的夫婦回到了他們的家鄉(xiāng)，建立了真正的糧食農(nóng)場(chǎng)，只是為了過(guò)上真正簡(jiǎn)單的生活。結(jié)合句意可知答案為C?！?6題詳解】考查名詞。A.anxiety焦慮；

B.loneliness孤獨(dú)；

C.sadness傷心；

D.joy快樂(lè)。根據(jù)ChenZuobinshookoffthe___11___andtirednessfromtoomuch___12___inthecity.可知，陳作斌擺脫了城市里太多工作帶來(lái)的焦慮和疲勞。故選A?！?7題詳解】考查名詞。A.desire欲望；

B.workload工作負(fù)擔(dān)；

C.relation關(guān)系；

D.money錢。根據(jù)ChenZuobinshookoffthe___11___andtirednessfromtoomuch___12___inthecity.可知，陳作斌擺脫了城市里太多工作帶來(lái)的焦慮和疲勞。可知答案為B?！?8題詳解】考查形容詞。A.warm溫暖；

B.thin薄的，瘦的；

C.smelly有臭味的；

D.fresh新鮮的。根據(jù)Onlyinthemountainscantheyenjoythe___13___air.可知，只有在山里他們才能享受到新鮮的空氣。故答案為D?！?9題詳解】考查名詞。A.water水；

B.dust灰塵；

C.sunlight陽(yáng)光；

D.smog煙霧。根據(jù)Thereisn’tthesmelloftailgas,butthesmellof___14___whenitshinesoverthewoods.可知，不是尾氣的味道，而是陽(yáng)光照射在樹(shù)林上的味道?？芍狢項(xiàng)符合題意?！?0題詳解】考查動(dòng)詞。A.playing玩；

B.sleeping睡覺(jué)；

C.dressing給------穿衣；

D.studying學(xué)習(xí)。根據(jù)Theylivealifeof“eatinghealthilyand___15___well.可知，他們過(guò)著“吃得健康，睡得好”的生活。B項(xiàng)符合語(yǔ)境?！?1題詳解】考查副詞。A.carefully細(xì)心地；

B.quickly迅速地；

C.properly適當(dāng)?shù)兀?/p>

D.happily高興地。根據(jù)Inatimewheneating___16___becomesaluxury(奢侈)inthe___17___life,it’strulyaright

waytoreturntothe___18___.可知，當(dāng)合理飲食成為城市生活中的一種奢侈時(shí)，它確實(shí)是一種回歸簡(jiǎn)樸的正確方式。故選C?！?2題詳解】考查形容詞。A.urban城市的；

B.real真的；

C.country鄉(xiāng)村的；

D.family家庭的。根據(jù)Inatimewheneating___16___becomesaluxury(奢侈)inthe___17___life,it’strulyaright

waytoreturntothe___18___.可知，當(dāng)合理飲食成為城市生活中的一種奢侈時(shí)，它確實(shí)是一種回歸簡(jiǎn)樸的正確方式?？芍鸢笧锳?！?3題詳解】考查名詞。A.nature自然；

B.wildness野蠻，荒涼；

C.beginning開(kāi)始；

D.simplicity簡(jiǎn)易，天真。根據(jù)Inatimewheneating___16___becomesaluxury(奢侈)inthe___17___life,it’strulyaright

waytoreturntothe___18___.可知，當(dāng)合理飲食成為城市生活中的一種奢侈時(shí)，它確實(shí)是一種回歸簡(jiǎn)樸的正確方式。故選D?！?4題詳解】考查動(dòng)詞。A.changing改變；

B.directing導(dǎo)演，指引；

C.leading領(lǐng)導(dǎo)；

D.finding發(fā)現(xiàn)。根據(jù)“Lifeisajourneyof___19___theproperway.“saidChenZuobin.可知，“人生是一段尋找正確道路的旅程”。陳作斌說(shuō)。故選D?！?5題詳解】考查動(dòng)詞詞組。A.fadedaway逐漸消失；

B.passedaway去世；

C.putaway收起來(lái)放好；

D.runaway逃跑，逃走。根據(jù)Thosedreamsaboutbranchroadshave___20___becausehehasfoundhisownpath.可知，那些岔路口的夢(mèng)想已經(jīng)消失了，因?yàn)樗业搅俗约旱穆贰＝Y(jié)合句意可知答案為A。三、閱讀理解22.BasicStudyManual

Hardcover:$37.50Futuresuccessdependsontheabilitytolearn.Herearetheanswerstothequestionsmostoftenaskedbyparents,teachers,businesstrainersandbystudentsthemselves.Readthisbookandlearn:◎Whatthethreebarrierstostudyare－andwhattodoaboutthem◎Whattodoifyougettiredofasubjectyouarestudying◎Twenty-sixsimpledrillstohelpyoulearnhowtostudyeasily,rapidlyandwithfullunderstanding◎BuyandreadtheBasicStudyManualanduseittodramaticallyimproveyourabilitytostudy.StudySkillsforLife

Hardcover:$31.99L.RonHubbard’sstudytechnologyforteenagersopensthedoortotheirfuturesuccessby[Z-X-X-K]givingthemtheabilitytostudyandlearn.Fullyillustrated（插圖）foreasycomprehension.LearningHowtoLearn

Hardcover:$24.99Thebasicsofeffectivestudyfor8-to12-yearolds,fullyillustrated.Childrenwhoreadandapplythematerialsinthisbookregaintheirlikingforstudyandtheirabilitytoapplythisknowledgeinlife.Getthisbookforachildyouwanttoseewinathisstudies!HowtoUseaDictionaryPictureBookforChildren

Hardcover:$34.90Inspiteofbillionsofdollarsspenton“educationalresearch,”childrenarenottaughtthemostbasicskillsoflearning,eventhemostbasicofthese:howtouseadictionary.Infact,asearchofeducationalbooksforchildrenfoundnotonethattoldthemhowtouseadictionary－orthatoneshould.Writtenforchildren8to12-yearold,thisfullyillustratedbookwillteachyourchild:◎Howtofindwordsinadictionary◎Thedifferentwaysthatwordsareused◎Whatthedifferentmarksandsymbolsthatareusedinadictionarymean◎HowtouseadictionarytocorrectlypronouncewordsIncludesasectionforparentsandteachersshowingyouhowtousethisbookwithchildren.Buythisbookandgiveittoyourchildrentounlocktheireducation.What’smore,you’lljustpay50%foritbeforeMay1,2015.12.Accordingtotheadvertisements,thefourbooksareallintendedfor________.A.teachers

B.adults

C.children

D.women13.Someofthefourbookswereillustratedinorderto_________.A.helpreadersunderstandthebook

B.persuadereaderstobuythemC.reducethecostofthebooks

D.makethebookssuitabletodifferentreaders14.IfyoubuythefourbooksonApril1,2015,youwillhavetopay___forthefourbooks.A.$129.38

B.$111.93

C.$64.69

D.$34.9015.Thepurposeofthepassagemeantto__________.A.introducethefourbookstoreaders

B.helpchildrentolearnEnglishC.enrichstudentsknowledgeaboutnature

D.sellthefourbookstoreaders參考答案：CABD23.Birdsenjoyalyslowrateofextinctionbutanewstudysuggeststhatratemightbeseverelyunderestimated(低估).Evenworse,ifhumanactionscontinue,birdextinctionratescouldskyrocketand12percentoftheknownbirdspecies(物種)couldbedyingoutbytheendofthecentury.Presentlythereare10,000knownbirdspecies—mostidentifiedafter1850—andanestimated130ofthosehavebecomeextinctsince1500,settingtheextinctionrateataboutonespecieseveryfouryears.ButaccordingtoStuartPimmofDukeUniversity,thisratefailstotakeintoaccountthreekeypoints:Thecontinualidentificationofextinctbirdspeciesfromfossilremains;numerous"missing"speciesnotyetdeclaredextinct;andthefactthatpresentextinctionrateswerenotcalculatedusingtheproperbaselinedateforwhenthespecieswasfirstdescribed.Takingthesepointsintoconsideration,theextinctionrateisclosertoonebirdspeciesperyear,saysPimm,theleadingauthorofthestudy.Andtheratecouldbethreetimesashighasthatifnotforrecentbirdpreservationefforts.Inpreviouscenturies,birdextinctionstookplacemainlyonislandsasPolynesianpeoplesexpandedintothePacificorEuropeanstookovertheAmericas,wipingoutbirdsalongtheway.Inrecentyears,scientistsareseeinganincreasednumberofextinctionsoncontinents,againbecauseofhumanactivities.Habitatdestruction,introductionofinvasivespecies,andclimatechangecombinetoharmmanybirdspecies.Beforehumaninfluence,theestimatedrateofbirdextinctionswouldhavebeenonlyonespeciesperhundredyears,researchersestimate.Birdextinctionratesareslowerthanformostanimals,mainlybecausehumansdomoreharmtootherspeciesandpeopletakespecialeffortstoprotectbirds.Still,ifthepresenttrendscontinue,theresearchersestimatethatthebirdextinctio