閱讀理解（七）科技說明

A

Airpollutionisabigproblemforcitiesinmostcountries.Manypeoplearedyingfromit.

Buthowcanwetelltheairqualityisgoodorbad?

InatreenexttoariverinAmsterdam,atinybirdhouseglows（發(fā)光）brightgreenwhentheair

isclean.Ifyou,restandingnearby,thebirdhousewillalsogiveyouafreeWi-Ficonnection

—butonlyifpollutionlevelislowenough.ThedesignerisJorisLam.Hisbirdhousetellsyou

abouttheairquality.

Joris'birdhouseiscalledTreeWifi.Itcanbeputonatreearoundyourhousetotestthe

airquality.Peoplecanseeascreenwithinformationaboutthelocalairqualityandhowtoimprove

it.

TreeWifiisasimplewayforpeopletoknowabouttheairpollutionaroundthem.Ifthebirdhouse

doesnotglow,peopleshouldcaremoreabouttheenvironment.Itremindsthemtochangetheir

lifestyles.Forexample,toprotecttheair,theycanridebikesorjustwalkinsteadofdriving

cars.

aImagineiftreesgavefreeWi-Fi,peoplewouldplantmoretreeslikecrazy.It'sapitythat

theyonlygiveustheoxygen（氧氣）webreathe,“Jorissaid.

Thebirdhousedoesn,tworkasahomeforbirdsnow.Jorisandhisteamaretryingtomakesome

changestoit.Inthefuture,theyhopebirdswillliveinthebirdhouseandtheheatofitsgreen

lightwillbeusedtokeepbirdswarminwinter.

1.Whatdoestheunderlinedword“it"inParagraph1referto?（）

A.Thebirdhouse.

B.Airquality.

C.Airpollution.

2.PeoplecangetafreeWi-Ficonnectionwhen.（）

?peoplearestandingnearby

②thepollutionlevelislowenough

③theairqualityislowenough

A.①②B.②③

C.①③

3.Jorisdesignedascreenforthebirdhouseto.（）

A.receivethefreeWi-Ficonnection

B.protectthebirdhousefromtherain

C.showinformationabouttheairquality

4.Inthefuture,thebirdhousewillalsobeused.（）

A.asahomeforbirds

B.totellustheweather

C.togiveustheoxygen

B[2020?淄博]

Howcancactus（仙人掌）helptheworld?Itcanprovideanewkindofsustainablefuel（可持續(xù)

燃料）.Nopalimex,acompanyinMexico,hasmadeoneoftheworld'sfirstcactus-poweredfactories.

TheideacametoSosainNopalimexwhenhewaslookingforwaystosavemoneyforhisfoodfactory.

Henowpowershisfactorywithcactusgas（氣體）.Thecosttoproducethegasishalfthecostof

electricity.

Soon,thegasproducedbyNopalimexwillalsobeusedincars.Nopalimex?sgasismadebyusing

thepricklypear（刺梨）一akindofcactus.Tomakethegas,thepricklypearismixedtogetherwith

manure（月巴料）.Thenthemixtureproducesthegasthatcanbeusedasfuel.

Whycactus?Fuelcanbemadefromotherplantssuchascorn,butthereareafewreasonswhy

cactusisabetterchoice.First,pricklypearsneedverylittlewaterandverylittlecare,and

growwel1inhottemperatures.Today,thesecharacteristicsarekey.Also,unlikecorn,prickly

pearsdon,tneedspacethatcouldbeusedforotherfoodplants.Theycangrowinareaswheremany

foodplantscan'tgrow.Last,aftermakinggasfrompricklypearsandmanure,theirbyproducts(§0

產(chǎn)品)canbeusedtohelpgrowfood.

Scientistsstillneedtodomoreresearchonmakingandusingpricklypeargas.Asprojects

likeNopalimexshow,wehavethepossibilitytoproducemoresustainablefueltopowerourlives.

1.Howcancactushelptheworld?()

A.BysavingfarmersJmoney.

B.Byprovidinganewkindofsustainablefuel.

C.Bytakingtheplaceofcorn.

D.Byproducingalotofelectricityandgas.

2.WhydoesSosapowerhisfactorywithcactusgas?()

A.Becausehewantstosavemoneyforhisfoodfactory.

B.Becausehehasgrownalotofcactusandcorninhistown.

C.Becausehewantstobewell-knownaroundtheworld.

D.Becausehewantstogrowcactusinsteadofcorn.

3.Whatdoestheunderlinedword“mixture“inParagraph2referto?()

A.TheNopalimexcompany.

B.Themanure.

C.Thepricklypearandmanure.

D.Cactus.

4.WhatisParagraph3mainlyabout?（）

A.Howcactusisusedtoproducegas.

B.Wherewecangrowalotofcactus.

C.WhatNopalimexdoeswithcactus.

D.Whycactusisabetterchoicetomakefuel.

C[2020?樂山]

Doyouknow5G?Itisthefifthgenerationofmobilenetworktechnology.Thesenewnetworks

arecoming.

Chinajustissuedcommerciallicenses（發(fā)放商用牌照）for5GonJune6,2019.Thismeansthat

China,stelecomcompanieswillbeabletooffer5Gnetworksformobilephoneusers.

Eachmobilenetworkgenerationisfasterandmorepowerfulthantheonebeforeit.1Gletus

talktoeachother.2Gletussendmessages.3GgaveusdataandtheInternet.And4Gmadeallof

thesethingsfaster.WhatJsspecialabout5G?

5Ghasaveryshortdelaybetweensendingandreceivinginformation.Now,4Gtakesabout100

to200milliseconds（毫秒）tosendandreceivedata.But5Gwillgetitdownto1millisecondor

less-thisisalmostreal-time.

ThisbigchangewillnotonlymakeourmobileInternetfaster,butalsodeeplychangeourlives.

Readontofindouthow.

5G+entertainment（娛樂）

5Gnetworksareabout100timesfasterthan4G.Thismeansyoucandownloadamovieinseconds

using5G.

Also,virtualreality（VR）gameswillbecomemorepopularwith5G.Theshortdelayof5Gwill

makethegamesfeelevenmorereal.

5G+transport

5Gwillalsobringussaferself-drivingcars.Thesecarscansendsignals（信號(hào)）toeachother.

Theyalsotalktotrafficlightsandroadsensors（傳感器）.5Gwillallowcarstoreact（反應(yīng)）even

fasterthanhumandrivers.

5G+smarthomes

5GalsomakestheInternetofthingspossible.Internetofthingsisalargenetworkthatconnects

everythingtotheInternet.Smarthomesarepartofit.

Forexample,yourtoastercanautomatically（自動(dòng)土也）startmakingbreakfastafteryouralarm

rings.Andifitssensorfeelstheairbecomingdry,asmartsprinkler（灑水器）couldwateryour

plantsbyitself.

1.What,sthewriter,spurposeinwritingthethirdparagraph?（）

A.Toexplain5Gisthebestofall.

B.Tosharehisknowledgeabout5G.

C.Toencouragepeopletousethenewnetworktechnology.

D.Toshowthedevelopmentofmobilenetworktechnology.

2.Whatdoestheunderlinedword“delay“inParagraph4meaninChinese?（）

A.卡頓B.延時(shí)

C.暫停D.掉線

3.Whichofthefollowingwaysisnotmentionedthat5Gwillchangepeople*slives?（）

A.Healthcare.B.Entertainment.

C.Transport.D.Smarthomes.

4.Whatwillpeopledopossiblywith5Gaccordingtothepassage?（）

A.Downloadamovieinminutes.

B.PuteverythingontotheInternet.

C.Makeself-drivingcarssafer.

D.Makefoodmoreeasilyandfaster.

5.What'sthemainideaofthepassage?()

A.5Gwillchangeourlivesinmanyways.

B.Mobilenetworksarechangingforbetter.

C.5GwillmaketheInternetofthingspossible.

D.5Gnetworksformobilephoneusersarecoming.

【參考答案】

A［主旨大意］本文是一篇說明文。空氣污染是一個(gè)大問題,設(shè)計(jì)師JorisLam設(shè)計(jì)了一個(gè)鳥舍一一TreeWifi?

本文介紹了TreeWifi的功能、用途、發(fā)展趨勢(shì),提醒人們注意空氣質(zhì)量變化，保護(hù)環(huán)境。

1.C代詞指代題。根據(jù)短文第一段第一、二句"Airpollutionisabigproblemforcitiesinmostcountries.

Manypeoplearedyingfromit.”可知代詞it指代前面的Airpollution。故選C。

2.A細(xì)節(jié)理解題。根據(jù)文章第二段中的"Ifyou,restandingnearby,thebirdhousewillalsogiveyou

afreeWi-Ficonnection—butonlyifpollutionlevelislowenough.”可知，當(dāng)人們站在鳥舍附近，

而且污染水平足夠低時(shí)才能獲得免費(fèi)的無線網(wǎng)絡(luò)。故選Ao

3.C細(xì)節(jié)理解題。根據(jù)短文第三段中的"Peoplecanseeascreenwithinformationaboutthelocalair

qualityandhowtoimproveit.”可知,Joris為鳥舍設(shè)計(jì)一個(gè)屏幕的目的是顯示空氣質(zhì)量信息。故選C。

4.A