江蘇省鎮(zhèn)江市句容第四中學(xué)2021年高二英語(yǔ)下學(xué)期期末試題含解析

江蘇省鎮(zhèn)江市句容第四中學(xué)2021年高二英語(yǔ)下學(xué)期期末試題含解析一、選擇題1.Shewassosadbecauseshefailedinthemathstest.Let’s______her_______.A.leave…behind

B.leave…alone

C.leave…aside

D.leave…out參考答案：B2.Onlylately

aboutthedarksecretsbehindtheseemingly-happymarriageofthegolfstarTigerWoods.A.thepublichaveknown

B.werethepublicknownC.havethepublicknown

D.thepublicknew參考答案：C3.Theworkersareso

tothenoiseofthemachinethattheydon’tevennoticeitduringtheirwork.A．a(chǎn)dmirable B．a(chǎn)ccustomedC．a(chǎn)stonished D．a(chǎn)ssociated參考答案：B【詳解】考查形容詞詞義辨析。句意：工人們?nèi)绱肆?xí)慣于機(jī)器的噪音以至于他們?cè)诠ぷ鲿r(shí)都沒(méi)有注意到（機(jī)器的噪音）。A.admirable令人欽佩的；B.accustomed習(xí)慣的C.astonished驚訝的；D.associated聯(lián)結(jié)的。根據(jù)后文“theydon’tevennoticeitduringtheirwork.”可知工人在工作時(shí)沒(méi)有注意到機(jī)器的噪音，說(shuō)明他們已經(jīng)習(xí)慣了（accustomed），故選B項(xiàng)?！军c(diǎn)睛】我們做題時(shí)，應(yīng)聯(lián)系上下文情境來(lái)選擇正確答案。本題中，很多考生在不看全句的情況下很容易選astonished（驚訝的），然而根據(jù)下文可知工人在工作時(shí)沒(méi)有注意到機(jī)器的噪音，在這個(gè)語(yǔ)境中，工人是習(xí)慣于噪音的，而不是驚訝，所以選B項(xiàng)。4.Thismorningtrafficwas____byanaccidentoutsidethetwonhall.A.heldoff

B.heldup

C.heldon

D.heldover參考答案：B略5.

Itisthetestsystem,_____theteachers,thatistoblamefortheheavyburdenofmiddleschoolstudentsnowadays.

A.otherthan

B.orrather

C.ratherthan

D.morethan參考答案：C6.－Gotothetheatrewithme,willyou?

－Ishouldlike______,butIdon'thavetime.A.to

B.too

C.todo

D.togoto參考答案：A7.Thequestion______helefttheroomisconfusing.

A.when

B.where

C.why

D.that參考答案：C8.Theysentsomeonetothevalueofthehouse.

A.access B.assistC.assess D.possess參考答案：C提示:句意:他們派了一個(gè)人去評(píng)估房子的價(jià)值。access“獲取”;assist“援助”;assess“評(píng)估”;possess“占有”。

9.—Isthereanypossibility________youcouldpickmeupattheairport?—Noproblem.A.when

B.thatC.whether

D.what參考答案：B第一句句意：你有沒(méi)有可能到機(jī)場(chǎng)來(lái)接我？that在此處引導(dǎo)同位語(yǔ)從句，具體說(shuō)明possibility的內(nèi)容。that引導(dǎo)同位語(yǔ)從句時(shí)在從句中不作任何成分，但不能省略；when引導(dǎo)同位語(yǔ)從句時(shí)在從句中作時(shí)間狀語(yǔ)；whether在同位語(yǔ)從句中不作成分；what在同位語(yǔ)從句中作主語(yǔ)、賓語(yǔ)或表語(yǔ)。10.Itturnedoutthatshewonthefirstprizeinthecompetition,whichwasbeyondher

.

A.expectations

B.reputations

C.contributions

D.celebrations參考答案：A11.Whilewaiting,shetriedto____hermind

withpleasantthoughtsofthevacation.A.occupy

B.take

C.cover

D.spend參考答案：A12.Nowadaysitisverycommonthatteenagersturnadeafeartotheirparents’advice,_______theysometimesknowittobeofgreatvalue.

A.asthough

B.nowthat

C.eventhough

D.sothat參考答案：C13.Ashehasworkedinthearmyasanelectricalengineerformanyyears,hehasevery____forthejob.Aability

Bcomfort

Cqualification

Dquality參考答案：C略14.____thatweallwentout，____inthesun.

A.Sofinewastheweatherlying

B.Sowasthefineweatherlying

C.Theweatherwassofinewaslay

D.Sotheweatherwastinelay參考答案：A15.Thenews_____ourathleteswonanothergoldmedalwasreportedinyesterday’snewspaperA.which

B.whether

C.what

D.that參考答案：D16.—Doyouthinkhewillcomeatthisweekend?

—___________,becausehehasanimportantpartytoattend.A.Idon’tbelieve

B.Idon’tbelieveit

C.Ibelievenotso

D.Ibelievenot參考答案：D17.Thosewhocan________difficultiesontheirwaytosuccessmaykeepcalmwhentheyreallyappear.A.avoid

B.overcome

C.cause

D.experience參考答案：B18.—YoualllikeyourEnglishteacher?

—Yeah,shedevotesherself____toteachinganditearnsheragoodreputation．A.originally

B.extremely

C.obviously

D.entirely參考答案：D19.___________，motherwillwaitforhimtohavedinnertogether．（）A．Howeverishelate B．HoweverheislateC．Howeverlateishe D．Howeverlateheis參考答案：D．無(wú)論多晚，媽媽都會(huì)等他一起吃晚飯．本題考查讓步狀語(yǔ)從句．用however引導(dǎo)讓步狀語(yǔ)從句，后面緊接形容詞/副詞+主語(yǔ)+謂語(yǔ)+其他．Howeverlateheis相當(dāng)于nomatterhowlateheis．二、完型填空20.Peter’sjobwastoexaminecarswhentheycrossedthefrontiertomakesurethattheywerenotsmugglinganythingintothecountry.Everyeveninghewouldseeafactoryworkercoming__16__thehilltowardsthefrontier,__17__abikewithapileofgoodsofoldstrawonit.Whenthebike__18__thefrontier,Peterwouldstopthemanand__19__himtakethestrawoffanduntieit.Thenhewouldexaminethestrawvery__20__tosee__21__hecouldfindanything,afterwhichhewouldlookinalltheman’spockets__22__helethimtiethestrawagain.Themanwouldthenputitonhisbikeandgooffdownthehillwithit.AlthoughPeterwasalways__23__tofindgoldorothervaluablethings__24__inthestraw,heneverfound__25__.Hewassurethemanwas__26__something,buthewasnot__27__tothinkoutwhatitcouldbe.Thenoneevening,afterhehadlooked__28__thestrawandemptiedtheworker’spockets__29__usual,he__30__tohim,“Listen,Iknowyouaresmugglingthings__31__thisfrontier.Won’tyoutellmewhatitis?I’manoldman,andtoday’smylastdayonthe__32__.TomorrowI’mgoingto__33__.IpromiseIshallnottell__34__ifyoutellmewhatyou’vebeensmuggling.”Theworkerdidnotsayanythingfor__35__.Thenhesmiled,turnedtoPeterandsaidquietly,“Bikes.”16.A.towards

B.down C.to D.up17.A.filling B.pulling C.pushing D.carrying18.A.arrived B.appeared C.came D.reached19.A.ask B.order

C.make D.call20.A.carefully B.quickly C.silently D.horribly21.A.that B.where

C.how D.whether22.A.before B.after C.first D.so23.A.lucky B.hoping

C.thinking D.wondering24.A.hadbeen B.hidden

C.hiding

D.havebeen25.A.nothing

B.something

C.everything

D.anything26.A.taking B.smuggling

C.stealing D.pushing27.A.possible

B.strong

C.able D.clever28.A.through

B.thoroughly

C.upon D.up29.A.like B.more

C.then D.as30.A.told B.cried C.ordered D.said31.A.cross B.past C.across

D.into32.A.thing B.work C.job D.duty33.A.rest B.back C.retire D.retreat34.A.everyone B.anyone C.noone

D.someone35.A.moment B.longtime C.sometime D.sometime參考答案：16．D17．C18．D19．C20．A21．D22．A23．B24．B25．D26．B27．C28．A29．D30．D31．C32．C33．C34．B35．D這篇完型填空講述了身為邊防檢查員的彼得明知一個(gè)工廠工人在走私貨物卻無(wú)法抓住對(duì)方的把柄。在退休的前一天，彼得懇請(qǐng)其說(shuō)出真相，結(jié)果令彼得恍然大悟。16．D。根據(jù)下文這個(gè)工人越過(guò)邊界后，走下山坡，所以到達(dá)邊界之前應(yīng)在朝山上走。故選up。17．C。這名工人是在推著一輛裝有稻草的自行車，故選動(dòng)詞pushing。18．D。這里表達(dá)的是到達(dá)邊界之意arrive,come為不及物動(dòng)詞不可直接接thefrontier，故選reached。19．C。ask與order后接不定式的復(fù)合結(jié)構(gòu)時(shí)，動(dòng)詞前應(yīng)有to,make后接不定式的復(fù)合結(jié)構(gòu)時(shí)，動(dòng)詞前to要省去。根據(jù)下文應(yīng)選make。20．A。彼得想發(fā)現(xiàn)這個(gè)工人在走私什么，所以應(yīng)仔細(xì)地檢查。故選carefully。21．D。這里根據(jù)文意，應(yīng)選擇表示“是否”之意的whether作賓語(yǔ)從句的引導(dǎo)詞。22．A。根據(jù)常理，彼得應(yīng)先檢查這個(gè)工人的口袋才能讓他捆起稻草走人，故選before。23．B．根據(jù)文意，彼得心中一直懷著查獲走私物品的希望，故選hoping。24．B。這里things和hide之間是被動(dòng)關(guān)系,現(xiàn)在分詞hiding作定語(yǔ)時(shí)表示主動(dòng)，所以應(yīng)用過(guò)去分詞hidden作后置定語(yǔ)表被動(dòng)。25．D。本句中否定詞never及文意決定了這里應(yīng)選anything。26．B。四個(gè)選項(xiàng)從語(yǔ)法上講都可以，只能從文意上進(jìn)行區(qū)分，smuggling意為“走私”，是正確選項(xiàng)。27．C。固定結(jié)構(gòu)beabletodosth.意為“能夠干某事”28．A。習(xí)慣用語(yǔ)lookthrough意為“徹底檢查”。29．D?！癮susual”為固定短語(yǔ)，意為“象平常一樣”。30．D。tell,order后面應(yīng)直接接人作賓語(yǔ)表示告訴某人和命令某人，而用say應(yīng)為saytosb.故said為正確選項(xiàng)。31．C．這里應(yīng)選擇一個(gè)介詞構(gòu)成介詞短語(yǔ)在句中做狀語(yǔ)。介詞past表“經(jīng)過(guò)”；across強(qiáng)調(diào)“從一邊到另一邊”；而into表示“進(jìn)入到……里面”。根據(jù)文意across應(yīng)為正確選項(xiàng)。32．C?！皁nthejob”為一常用短語(yǔ)。意為“執(zhí)行公務(wù)”。33．C。因?yàn)榻裉焓潜说米詈笠惶焐习嗾f(shuō)明明天他就要退休retire。34．B。根據(jù)句中否定詞not及文意應(yīng)選anyone。35．D。本句說(shuō)明這個(gè)工人回答彼得的問(wèn)題之前沉默了一會(huì)兒。A選項(xiàng)應(yīng)用amoment；C選項(xiàng)表示某一點(diǎn)時(shí)間；D選項(xiàng)表示一段時(shí)間或一會(huì)兒，為正確選項(xiàng)。21.BeaTraveler,notaTouristLastsummer,Ihadjustenoughmoneysavedtobuyagoldenticket—a3-monthtrainpassthatwouldtakemetothefurthestreachesofEurope.Excitedformyjourney,Ipackedallthenecessities—exceptthe_____21_____WhiletheconvenienceoftheInternetwasdefinitelyacontributingfactortomy___22___nottotakewithmethefewexpensivekilogramsofout-of-dateinformation,thiswasnottheonlyreasonwhyIdecidedtoflyalone.Tobehonest,mymain_____23_____withtheguidebookisthatIfindit_____24_____

thepleasureofajourney—likebossyauntwhoisalwaystellingyouwhattodo,

___25___shedoesn’talwaysknowwhatisthebest.Experiencehastaughtmethatthereisanobvious_____26_____

betweenatouristandtraveler.Whilewaitinginaqueue,Imetamanwhohadachecklist.Heshowedmehislistof“Top20ThingsToDoinItaly”and_____27_____

offinaloudAmericanaccentthathe’dseeneverythingItalyhastoofferinjustfourdays.TheproblemIhadwiththisman’s______28______

totravellingwasthathewastoo____29____

information

provided

by

his

guidebook.

He

was

lost

in

the

____30____attractivenessofthe“must-sees”and_____31_____

toallthewondersandadventuresthatmighthappenduringthe____32____trip.So,

_______33_______any

guidebook,

I

traveled

to

Estonia,

the

tiny

Baltic

countryborderingRussia.Inthe______34______ofadvanceplansasguidebookswouldsuggest,Ihadnochoicebuttoturntosomefriendlyfacesforadvice.I

_____35_____myselffirstandthenaskedthemwhatwashappeningaroundthetown.Whenthis

______36______

aninvitationtoabeautifulEstonianhomebyariverwhereI

_____37_____

a110-degreewood-stovesauna,

_____38_____

pickedforest-mushroomsandthegood

_____39_____

ofourfivenewfoundEstonianfriends,IwasmostgladthatIhadleftmy“bossy_____40_____”athome.21.A.guidebook

B.magazine

C.cash

D.map22.A.goal

B.excuse

C.decision

D.mistake23.A.suggestion

B.problem

C.dislike

D.connection24.A.increases

B.annoys

C.removes

D.limits25.A.eventhough

B.asif

C.asthough

D.aslongas26.A.similarity

B.distinction

C.competition

D.misunderstanding27.A.cut

B.showed

C.gave

D.put28.A.way

B.determination

C.confidence

D.approach29.A.cautiousabout

B.amusedby

C.focusedon

D.surprisedat30.A.likely

B.seemingly

C.orderly

D.lovely31.A.blind

B.dumb

C.deaf

D.eager32.A.guided

B.imagined

C.real

D.paid33.A.without

B.beyond

C.except

D.unlike34.A.loss

B.control

C.face

D.absence35.A.introduced

B.warned

C.calme

D.enjoyed36.A.resultedin

B.cutin

C.brokein

D.putin37.A.found

B.enjoyed

C.ordered

D.bathed38.A.locally

B.secretly

C.rarely

D.nervously39.A.experience

B.company

C.opinion

D.time40.A.mom

B.book

C.aunt

D.master參考答案：21.A

22.C

23.B

24.D

25.A

26.B

27.B

28.D

29.C

30.B

31.A

32.C

33.A

34.D

35.A

36.A

37.B

38.A

39.B

40.C本文介紹作者旅行的經(jīng)過(guò)，作者想成為一個(gè)真正的旅游者，而不是旅游專家?！?1題詳解】Ａ考查名詞。A.guidebook指導(dǎo)書；

B.magazine雜志；

C.cash現(xiàn)金；

D.map地圖。為我的旅行感到興奮，除了指導(dǎo)書，我把所有的必須品打包。因?yàn)橹笇?dǎo)書在旅游時(shí)要看，所以不能打包，故選Ａ?！?2題詳解】Ｃ考查名詞。A.goal目標(biāo)；

B.excuse借口；

C.decision決定；

D.mistake錯(cuò)誤?；ヂ?lián)網(wǎng)的便利無(wú)疑對(duì)我的決定是一個(gè)促進(jìn)因素，不要把那些過(guò)時(shí)信息帶走，這不是我決定獨(dú)自飛翔唯一的原因?？芍鸢笧椋??！?3題詳解】Ｂ考查名詞。A.suggestion建議；B.problem問(wèn)題；C.dislike不喜歡；D.connection關(guān)系。誠(chéng)實(shí)的說(shuō)，我?guī)е笇?dǎo)書的主要問(wèn)題是它限制了旅游的快樂(lè)。答案為Ｂ。【24題詳解】Ｄ考查動(dòng)詞。A.increases增長(zhǎng)；

B.annoys打擾；

C.removes除掉；

D.limits限制。我?guī)е笇?dǎo)書的主要問(wèn)題是它限制了旅游的快樂(lè)?？芍鸢笧椋摹！?5題詳解】Ａ考查狀語(yǔ)從句。A.eventhough即使；

B.asif好像；

C.asthough

好像；

D.aslongas只要。像專橫的阿姨總是告訴你該怎么做，即使她并不總是知道什么是最好的。可知答案為Ａ?！?6題詳解】Ｂ考查名詞。A.similarity相似；

B.distinction差別；

C.competition競(jìng)賽；D.misunderstanding誤解。經(jīng)驗(yàn)告訴我旅游專家和旅游者之間是有差別的。答案為Ｂ?！?7題詳解】Ｂ考查動(dòng)詞。A.cut切，砍；

B.showed出示；

C.gave給；

D.put放。他給我看了他在意大利“20件事”的單子，用大聲的美國(guó)口音炫耀，他看到了意大利在四天內(nèi)所提供的一切。ｓｈｏｗｏｆｆ炫耀，可知答案為Ｂ?！?8題詳解】Ｄ考查名詞。A.way道路；

B.determination

決心；

C.confidence自信；

D.approach方法。我與這個(gè)人的旅行方法的問(wèn)題是他太專注于導(dǎo)游手冊(cè)上提供的信息。可知答案為Ｄ。【29題詳解】Ｃ考查動(dòng)詞詞組。A.cautiousabout謹(jǐn)慎于；

B.amusedby愉快的；

C.focusedon集中于；D.surprisedat對(duì)―――感到驚訝。我與這個(gè)人的旅行方法的問(wèn)題是他太專注于導(dǎo)游手冊(cè)上提供的信息。答案為Ｃ。【30題詳解】Ｂ考查形容詞。A.likely可能的；

B.seemingly看來(lái)似乎的；

C.orderly有秩序的；

D.lovely可愛(ài)的。他迷失在“必看”的看似吸引力的地方，他對(duì)所有可能發(fā)生在真正的旅行中的奇跡和冒險(xiǎn)是盲目的。可知答案為Ｂ?！?1題詳解】Ａ考查形容詞。A.blind盲目的；

B.dumb啞的；

C.deaf聾的；

D.eager渴望的。他對(duì)所有可能發(fā)生在真正的旅行中的奇跡和冒險(xiǎn)是盲目的?？芍鸢笧椋??！?2題詳解】Ｃ考查形容詞。A.guided有向?qū)У模?/p>

B.imagined想象的；

C.real真的；

D.paid已付的。他對(duì)所有可能發(fā)生在真正的旅行中的奇跡和冒險(xiǎn)是盲目的。答案為Ｃ?！?3題詳解】Ａ考查介詞。A.without沒(méi)有；

B.beyond在―――之上；

C.except除―――之外；

D.unlike不像是一樣。所以不帶向?qū)胰stonia旅游?？芍鸢笧椋痢！?4題詳解】Ｄ考查名詞。A.loss損失；

B.control控制；

C.face臉；

D.absence缺席。按著向?qū)慕ㄗh，缺少提前的計(jì)劃，我只好求助于一些友好面孔的建議。ｉｎｔｈｅａｂｓｅｎｃｅｏｆ缺少―――，可知答案為Ｄ?！?5題詳解】Ａ考查動(dòng)詞。A.introduced

介紹；

B.warned警告；

C.calmed冷靜；

D.enjoyed喜愛(ài)。我首先自我介紹，然后詢問(wèn)城鎮(zhèn)周圍所發(fā)生的事情。答案為Ａ?！?6題詳解】Ａ考查動(dòng)詞詞組。A.resultedin導(dǎo)致；

B.cutin插嘴；

C.brokein

破門而入；

D.putin提出，提交。根據(jù)上文的自我介紹和詢問(wèn)，最終有了一個(gè)美麗Estonian家園的邀請(qǐng)。可知答案為Ａ。【37題詳解】Ｂ考查動(dòng)詞。A.found發(fā)現(xiàn)；

B.enjoyed

喜愛(ài)；

C.ordered

命令；

D.bathed沐浴?？芍谀抢锵硎芰薬110-degreewood-stovesauna，在本地采摘森林蘑菇，并有幾個(gè)新友的陪伴?？芍鸢笧椋??！?8題詳解】Ａ考查副詞。A.locally在本地；

B.secretly秘密地；

C.rarely罕見(jiàn)地；

D.nervously緊張不安地。在本地采摘森林蘑菇，并有幾個(gè)新友的陪伴?？芍鸢笧椋??！?9題詳解】Ｂ考查名詞。A.experience經(jīng)驗(yàn)；

B.company公司；

C.opinion建議；

D.time時(shí)間。在本地采摘森林蘑菇，并有幾個(gè)新友的陪伴。可知答案為Ｂ?！?0題詳解】Ｃ考查名詞。A.mom媽媽；

B.book書；

C.aunt阿姨；

D.master主人。我很高興，我把“專橫的阿姨”留在家里?？芍鸢笧椋??！久麕燑c(diǎn)睛】解完型填空題時(shí)，單獨(dú)看一句話是找不到正確答案的，需要閱讀下句或者若干句才能明白。所謂上下對(duì)照，即在上文和下文中找到與正確答案相同的關(guān)鍵詞。因此，在做題時(shí)要邊讀邊在大腦中儲(chǔ)存上下文信息的能力，捕捉關(guān)鍵詞。本文第14小題，按著向?qū)慕ㄗh，缺少提前的計(jì)劃，我只好求助于一些友好面孔的建議。ｉｎｔｈｅａｂｓｅｎｃｅｏｆ缺少―――，可知答案為Ｄ。三、閱讀理解22.WinnersClubYouchoosetobeawinner!TheWinnersClubisabankaccountspeciallydesignedforteenagers.Ithasbeenmadetohelpyoubettermanageyourmoney.TheWinnersClubisatransactionaccount（交易賬戶）whereyoureceiveakey-cardsoyoucangettoyourmoney24/7—that’s24hoursaday,7daysaweek!It’saclubwithimpressivefeaturesforteenagers.Noaccountkeepingfees!You’renomillionairesowedon’texpectyoutopaylargefees.Infact,therearenoaccountkeepingortransactionfees!Excellentinterestrates!Youwantyourmoneytogrow.TheWinnersClubhasagoodrateofinterestwhichgetsevenbetterifyoumakeatleasttwodeposits（儲(chǔ)蓄）withouttakingthemoutinamonth.ConvenientTeenagersarebusy—wegetthat.Youmayneverneedtocometoabankatall.WiththeWinnersClub,youcanchoosetousehandytellersandtobankfromhome.UsingthephoneandtheInternet,youcanhavemoneydirectlydepositedintoyourWinnersClubaccount.Thiscouldbeyourpocketmoneyoryourpayfromyourpart-timejob!MegamagazineincludedAlongwithyourregularreport,youwillreceiveaFREEmagazinefullofgoodideastomakeevenmoreofyourmoney.TherearealsofantasticoffersandcompetitionsonlyforWinnersClubmembers.TheWinnersClubisagreatchoiceforteenagers.Anditissoeasytojoin.Simplyfillinanapplicationform.Youwillhavetogetpermissionfromyourparentorguardian(sowecanorganizethatcoolkey-card)butitiseasy.Wecan’twaittohearfromyou.It’sthebestwaytochoosetobeawinner!21.TheWinnersClubisabankaccountintendedfor________.A.parents

B.winners

C.teenagers

D.adults22.WhichofthefollowingisTRUEabouttheWinnersClub?A.Specialgiftsarereadyforparents.B.Thebankopensonlyonworkdays.C.Feesarenecessaryfortheaccountkeeping.D.Servicesareconvenientforitsmembers.23.IfyouwanttobeamemberoftheClub,youmust________.A.bepermittedbyyourparent

B.haveabigsumofmoneyC.beanInternetuser

D.beinyourtwenties參考答案：21--23CDA23.Daylight-poweredgerm-killingequipment（殺菌設(shè)備）maysomedayhelpprotecthealthworkersfromdeadlyviruslikeEbolavirus.ThatisafindingfromastudypublishedinthejournalScienceAdvances.Studyorganizerssaythey’vedevelopedmembranes（薄膜）thatproduceverysmallamountsofhydrogenperoxide（過(guò)氧化氫）whenleftindaylight.Membranesarethinplastic,structuresthatcanserveasbarriers.Theyletsomethingspassthrough,butotherthingsartblocked.Hydrogenperoxide,aliquidsoldindrugstores,worksasadisinfectant（殺菌劑）.Nearly500healthworkerswereinfectedanddiedin2014whenEbolaspreadthroughpartsofWestAfrica.Caregiverswearfull-bodyprotectivesuitswhentheycomeintocontactwithpatientswithinfectiousdiseases.Buttheprocessofremovingthesuitsisatimewheninfectioncanspreadifthesurfaceiscoveredwithvirus.“Ifthere’sanylivebacteriaorvirusonthesurface,it’sstilltransmissibleandcouldcauseinfection,”saidGangSunoftheUniversityofCalifornia.Heisoneoftheresearchersthatworkedtodevelopmembranesthatcouldcovertheoutsideofprotectiveequipment.Whenthechemicalmolecules（分子）onthesurfaceofthesemembranesareputinsunlight,theyreactwithoxygenintheairtoproducesmallamountsofhydrogenperoxide.GangSunexplainsthattheprocesscreateslesshydrogenperoxidethanwhatyouwouldusetoremovedirtonclothing,forexample.Butitisstillenoughtokillorganisms.RohanTikekarisafoodscientistwiththeUniversityofMaryland.Hedescribedthedevelopmentas“quitenovel,”ornewanddifferent,Tikekarwasnotinvolvedwiththerecentstudy.Hesaidothershavedevelopedmaterialsthatproducedisinfectingchemicals.Butmostonlyworkunderhigh-energyultraviolet（UV）light,andnotusualdaylight.Thenewmembranealsoworksinthedarkforatleastanhourortwob