人教版英语必修第一册单元综合检测（解析版答案）unit 1 teenage life

unit1teenagelife

单元综合检测

第一部分阅读理解（共两节，满分50分）

第一节（共15小题；每小题2.5分，共37.5分）

阅读下列短文，从每题所给的A、B、C和D四个选项中选出最佳选项。

A

Lizzie5sdiaryfromAntarctica（南极洲I）

Day3：TuesdayDecember2

WeplannedtogotoRotherathatmorning.We'dbestayingthereforthenexttwo

weeks.BecauseAntarcticaisthewindiestplaceonearth,sometimesyoucan，tflyat

all.

Wehadanervouswaitoverbreakfasttofindoutifwe'dbeleavingthatday.

PeoplehavetostayinStanleyforweekswhilethepilotswaitforgoodweather.

Itturnedclearat9：30andwetookoffat10：30onalittleredplanecalled

Dash-7.Butevenwhenwewereintheair,therewasstillachancewewouldn，tbeable

toflythewholeday.

Day4：WednesdayDecember3

AfterwakingupintheAntarcticforthefirsttimetodayIcanunderstandwhy

everybodywhocomesherefallsinlovewiththeplace.Itisreallybeautiful.

We'restayingatRotheraSurveybasewithmountainsoficeallaround.Itisvery

cold,buttheregularshereareoftenseenwalkingaroundinT-shirts!

Day5：ThursdayDecember4

IwokeuptoanotherbeautifulsunnydayhereintheAntarctic.I'mtoldit，sabit

coldertoday,butit'snotverywindysoitfeelswarmer.Thoseofuswhoarenewto

thebasehavetodoaspecialtrainingcoursebeforewe'reallowedtogooffbaseto

otherstationsortogosnowboardingoverthenearbyhill.

Day7：SaturdayDecember6

Notacloudintheskyandit'swarmenoughtositoutside（inajacket）.

Themostamazingthingaboutthisplaceishowthescenerychangeseveryday.

AtfirstIthoughtIwasgoingmad.I'dstepoutsideinthemorningandthink,

Tmsurethatbigmountainoficewasn'tthereyesterday.nIt'sbecausetheseaice

isalwaysmoving一slowlythankfully!

1.WhendidLizziesitoutsidewearingajacket?

A.OnTuesday.B.OnWednesday.

C.OnThursday.D.OnSaturday.

2.WhatcouldstopLizziefromleavingStanleyfbrRothera?

A.Strongwinds.B.Thickclouds.

C.Mountainsofice.D.Lowtemperature.

3.HowdidLizziefeelduringherstayintheAntarctic?

A.Afraid.B.Nervous.

C.Amazed.D.Bored.

B

Movingflighttimesfromnighttodaycouldreduceairtravefscontributionsto

globalwarming,anewstudysuggests.Schedulingmoredaytimeflightsmayreduce

theinfluenceofcontrails（飞机凝迹）一thevisiblelinesofwhitesteamthatmany

planesleavebehindtheminthesky.

Theroleofcontrailsinclimatechangeisstillbeingstudied,butsomescientists

believetheycontributetothegreenhouseeffectbytrappingheatintheatmosphere.

NicolaStuber,firstauthorofthestudy,suggeststhatcontrails，overallimpacton

climatechangeisalmostasbigasthatofaircraft，scarbondioxideemissions（排

放）overahundred-yearperiod.Aircraftarebelievedtoberesponsiblefor2%-3%of

humancarbondioxideemissions.Likeotherhigh,thinclouds,contrailsreflectsunlight

backintospaceandcooltheplanet.However,theyalsotrapenergyintheatmosphere

andincreasethewarmingeffect.

Stuberandotherscientistsbelievethattheeffectofthecontrailsisbig."On

average,thegreenhouseeffectcontrolstheeffectsofcontrails,“saidStuber,a

meteorologistatEngland，sUniversityofReading."Thewarmingeffectisfargreater

forcontrailsleftbynightflights,“Stuberadded."Thecoolingeffectonlyhappens

duringthedaywhenthesunisup.Duringthenightthegreenhousewarmingisno

longerbalancedandthatiswhythecontributionofnight-flightissolarge.v

Mostcommercialairlinetrafficoccursduringdaylighthours.Forexample,only

oneinfourUnitedKingdomflightsisanightflight,butthoseflightscreatesome60%

ofthewarmingcreatedbycontrails,thestudyreports.

4.Howdocontrailsincreasethegreenhouseeffect?

A.Theygiveoffheat.

B.Theyabsorbdaylight.

C.Theytrapheatintheatmosphere.

D.Theyreflectsunlightbackintospace.

5.Whatdoestheunderlinedword"they”inParagraph3referto?

A.Carbondioxideemissions.

B-Contrails.

C.Flights.

D.Thinclouds.

6.WhatdidStuberexplainaboutthecontrailsinParagraph4?

A.Whattheirfunctionis.

B•HowtheycooltheEarth.

C.Whytheycreatebigwarmingatnight.

D.Howbigtheireffectis.

7.Whatcanbeasuitabletitleforthetext?

A.AirlinesShouldScheduleFlights

B.NightFlightsFaceaNewChallenge

C.AirplaneContributesMosttoGlobalWarming

D.MoreDayFlightsMayReduceGlobalWarming

C

GrandparentsAnsweraCall

Asathird-generationnativeofBrownsville,Texas,MildredGarzaneverplanned

tomoveaway.EvenwhenherdaughterandsonaskedhertomovetoSanAntonioto

helpwiththeirchildren,shepolitelyrefused.Onlyafterayearoffriendlydiscussion

didMs.Garzafinallysayyes.Thatwasfouryearsago.Todayallthreegenerations

regardthemoveasasuccess,givingthemacloserrelationshipthantheywouldhave

hadinseparatecities.

NostatisticsshowthenumberofgrandparentslikeGarzawhoaremovingcloser

toadultchildrenandgrandchildren.Yetthereisevidencesuggestingthatthetrendis

growing.EvenPresidentObama，smother-in-law,MarianRobinson,hasagreedto

leaveChicagoandmoveintotheWhiteHousetohelpcareforhergranddaughters.

Accordingtoastudyby,83percentofthepeoplesaidMrs.

Robinson，sdecisionwillinfluencegrandparentsintheAmericanfamily.Two-thirds

believemorefamilieswillfollowtheexampleofObama，sfamily.

“Inthe1960swewereallalittlewildandcouldn?tgetawayfromhomefar

enoughorfastenoughtoprovewecoulddoitonourown,“saysChristineCrosby,

publisherofGrand,amagazinefbrgrandparents."Wenowrealizehowimportant

familyisandhowimportantitistobenearthem,especiallywhenyou'reraising

children.”

Movingisnotforeveryone.Almosteverygrandparentwantstobewithhisorher

grandchildrenandiswillingtomakesacrifices,butsometimesitiswisertosaynoand

visitfrequentlyinstead.Havingyourgrandchildrenfarawayishard,especially

knowingyouradultchildisstruggling,butgivingupthelifeyouknowmaybeharder.

8.WhywasGarza'smoveasuccess?

A.Itstrengthenedherfamilyties.

B-Itimprovedherlivingconditions.

C.Itenabledhertomakemorefriends.

D.Ithelpedherknowmorenewplaces.

9.WhatwasthereactionofthepublictoMrs.Robinson，sdecision?

A.17%expressedtheirsupportfbrit.

B.Fewpeoplerespondedsympathetically.

C.83%believedithadabadinfluence.

D.Themajoritythoughtitwasatrend.

10.WhatdidCrosbysayaboutpeopleinthe1960s?

A.Theywereunsureofthemselves.

B・Theywereeagertoraisemorechildren.

C.Theywantedtoliveawayfromtheirparents.

D.Theyhadlittlerespectfbrtheirgrandparents.

11.Whatdoestheauthorsuggestthegrandparentsdointhelastparagraph?

A.Makedecisionsinthebestinterestsoftheirown.

B.Asktheirchildrentopaymorevisitstothem.

C.Sacrificefortheirstrugglingchildren.

D.Gettoknowthemselvesbetter.

D

Bornin1918,inthelittletownofWhiteSulphurSprings,WestVirginia,

KatherineJohnsonwassimplyattractedbynumbers.Asachild,shecounted

everything.Shecountedthestepstotheroad,thestepsuptochurch,thenumberof

dishesshewashed...Bythetimeshewas10yearsold,shewasahighschoolfreshman,

whichwastrulyamazinginatimewhenschoolfbrAfrican-Americansnormally

stoppedateighthgrade.Tomeethermathpotential,herfatherdrovehisfamily120

milestoInstitute,WestVirginia,whereblackscouldcontinuehighschooleducation.

Johnson'sexcellentperformanceprovedherfather，sdecisionwastherightone:

Katherineskippedgradestograduatefromhighschoolat14andfromcollegeat18.

1953,afteryearsasateacherandlaterasastay-at-homemom,shebeganworking

forNASA,whichbeganhiringwomentomeasureandcalculatetheresultsofwind

tunnel（风洞）testsin1935.Inatimebeforetheelectroniccomputers,thesewomen

werecalled“computer”.EvenafterNASAbeganusingelectroniccomputers,the

astronautJohnGlennrequestedthatsheshouldpersonallyrecheckthecalculations

madebythenewelectroniccomputersbeforehisflight.

ShecontinuedtoworkatNASAuntil1986.Hercalculationsprovedcriticalto

thesuccessoftheApolloMoonlandingprogramandtheUnitedStates5journeyinto

space.Herstorywasthebasisfbrthe2016filmHiddenFigures.

KatherineJohnson,agreatmathematician,physicist,spacescientistandthelast

computerthatworeskirts,passedawayonFebruary24,2020.

12.WhatcanbeinferredfromParagraph1?

A.Katherinelefthighschoolateighthgrade.

B-Katherinewasgiftedinmathasachild.

C.Katherinewasrequiredtocountinherchildhood.

D.African-Americanshadagoodeducationinthe1920s.

13.HowlongdidKatherineworkatNASA?

A.18years.B.33years.

C.51years.D.81years.

14.Whichbestexplainstheunderlinedword"critical”inParagraph3?

A.Important.B.Successful.

C.Dangerous.D.Harmful.

15.What'sthebesttitleforthetext?

A.ScientistsatNASA

B.KatherineJohnson，sEducation

C.AGreatMathematician?sDecision

D.KatherineJohnson,aComputerThatWoreSkirts

第二节（共5小题；每小题2.5分，满分12.5分）

根据短文内容，从短文后的选项中选出可以填入空白处的最佳选项。选项中

有两项为多余选项。

“Idon'tlikemyparents.TheyalwaystellmeIshoulddothisandshouldnotdo

that.Itsometimesmakesmeangry,“saidZhangHua,amiddleschoolstudentin

Guangzhou.16

Perhapsyourparentshadthesameproblemwhentheywereatyouragelongago.

Whydoesitseemthatsomeparentsarenotsofriendlyintheirchildren，seyes?

Oneofthebiggestthingsiswhensomeonebecomesaparent,heorshelikes

worryingaboutthings.Parentsdoalotforyou,thoughsomethingwillmakeyouangry.

Theyworryaboutyourchoiceoffriends,thefoodyoueat,yourworkatschool,how

muchsleepyouget...17Theywantyoutogrowuphealthilyandhappily.

Sohowcanyoumakethingseasierbyyourself?18Justmakesureyour

parentsknowwhatyou'redoing.Letthemknowyourfriends.19Take

responsibilityforwhatyouhavedone.Talkaboutyourideaswiththem.Theymaytalk

abouttheirswithyou.

Andyoushouldthinkaboutwhyyourparentsdothisorthat.Theystillpractice

beingparentsandneedhelpthatyoucangivethem.20theymaybeabletohelp

yougetonwellwithyourchildren.

A.Someday,whenyoubecomeaparent,

B-Allthesethingsarepartofyourlife.

C-Saysorrytothemwhenyoumakemistakes.

D.It，sharderthanyouthink.

E.Ifseasierthanyouthink.

F.Doyouhavethesameproblem?

G.Youcanmakeallthesethingsbyyourself,

第二部分语言知识运用（满分30分）

第一节（共15小题；每小题1分，满分15分）

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以

填入空白处的最佳选项。

Oneday,MissEllisgaveherpupilsanewkindofhomework:homeworkon

happiness.Herpupilswouldbe"happiness21,andweretoseewhatwould

happenwhentheytriedtobringhappinesstothosearoundthem.Aspartoftheir

homework,allthestudentsdidreally22,wonderfulthings,butwhatCarla

Chalmersdidlefteveryone23.Severaldaysafterthehomeworkhadbeenhanded

out,Carlaturnedupcarryingabigbag.

uHereinthisbagIhaveallthehappinessI'vecollectedsofar,“shesaid

24.Onseeingthis,everyonewasfilledwith25，butCarladidn，twantto

showanyonewhatwasinthebag.Instead,shepulledoutasmallboxandgaveittoher

teacher.WhenMissEllishadtakenthebox,Carlatooka（n）26cameraoutofher

ownpocketandstoodwithitattheready.

“Openit,MissEllis.”

Theteacherslowlyopenedtheboxandlookedinside.Abigsmile27onher

face,andatthatmomentCarlatookaphoto,Carla5sphotocameoutofthecamera

immediately,andshe28ittoMissEllisalongwithasheetofpaper.Theteacher

readthepaperinsilence,andwhenshehadfinished,shegesturedatthe29.

“Oh,soit's…”

“Yes!"30Carla,openingthebag."It'sagreatbigpileofsmiles!”

Sheopenedthebagandphotosofdifferent31fellout.

Therestoftheclasstriedto32howCarlahadmanagedtocreatesucha

greatbigchainofhappiness.Allthereintheboxwasaphotoofabigsmile.But

everyonewhohadseenitfelthappinessbeingtransmitted（传送）tothem,andinreturn,

without33，everyperson34withasmileoftheirown.

Shemanagedto35understandingofthesmiletruththateverytimeyou

smileyouaresendingagifttotheworld.

21.A.explorersB,instructors

C・playersD.collectors

22.A.regretfulB.delightful

C-stressfulD.thankful

23.A.surprisedB.satisfied

C.annoyedD.depressed

24.A.disappointedlyB.sadly

C・amazedlyD.smilingly

25.A.astonishmentB.kindness

C.expectationD.pride

26.A.expensiveB.old-fashioned

C-instantD.good-looking

27.A.disappearedB.froze

C.fadedD.shone

28.A.offeredB.sold

C・packedD.paid

29.A.boxB.bag

C.cameraD-pocket

30.A.addedB.questioned

C.repliedD.interrupted

31.A.smilesB.teachers

C.ceremoniesD.friends

32.A.tryoutB.focuson

C・decideonD.figureout

33.A.imaginationB.expression

C-hesitationD.reason

34.A.respondedB.refused

C-demandedD.proved

35.A.hideB.correct

C.appreciateD.spread

第二节(共10小题；每小题1.5分，满分15分)

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Inwesterncountriestheonlypersonwhomightdaretotellyouthatyouarefatis

your36.(person)doctor.Thenhewouldprobablytellyouhowtolose

weight.InChina,thereisnosuchinhibition(拘谨)asto37.(talk)about

people，sweight.It38.(be)commonforChinesetogotoforeigners,saying,

“Youarefat."Whiletalkingwith39.Chinesefriendaboutthis,shetold

methatIwaswrongandthatChinesewillnormallysay,“Youaresofat."Thereare

severalreasons40.peoplewillsaythis.Firstly,therearen，tmanyfatpeople

inChina.Itisalmosta41.(curious)toseesomeonefat.Secondly,thereare

42.(few)privateissues.Thirdly,peoplejustfeelfreertospeakexactlywhat

isontheirmind.TryfeedingWesterndesserttoAsians43.youwillalways

hearutoosweet,toosweet”.SomeChinesethinkthatallWesternersarefat.OnceI

44.(play)basketballwhenaguysaid,“Whyareyousoskinny?Ithought

allpeoplefromAmericawerefat."PerhapsifmorepeopleinAmericancommenton

others'weight,thenitmighthelpremindpeopletotry45.(stay)fit.

第三部分写作(共两节，满分40分)

第一节(满分15分)

假如你是李华，暑假在英国参加了你校组织的“中国学生文化交流周”活动，

并住在Kelly家里。请你给在英国期间认识的新朋友Kelly写封感谢信，内容包括：

1.交流活动中的收获；

2.难忘在Kelly家的美好日子；

3.感谢她送你的英文词典。

注意：

1.词数80左右；

2.可以适当增加细节，以使行文连贯；

3.开头已给出，不计入总词数。

参考词汇：文化交流周：CulturalExchangeWeek

DearKelly,

I"vebeenbackhomesafelyfromEngland.

第二节（满分25分）

阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整

的短文。

Onetime,theteachersataschoolwantedtoteachthestudentsaboutairplanes.

Whileallairplanescanfly,someareabletoflyfartherthanothers.Thisisbecausenot

allairplanesarebuiltthesame.Forexample,afighterplanelooksverydifferentfroma

planethatpeopleflyinwhentheywanttogoonaholiday.Theteacherswonderedhow

theycouldmakestudentsunderstandthis.

Then,thescienceteacher,Mr.Moose,decidedthattheschoolshouldhaveapaper

airplanecontest.Thestudentswouldproducepaperairplanedesigns.Theywouldstand

inlineontheplaygroundbehindtheschool.Thestudentswouldtaketurnsthrowing

theirairplanes.Thestudentwhoseairplanewentthefarthestwouldwin.

WhenMr.Mooseannouncedthepaperairplanecontesttothestudents,theywere

veryexcited.AstudentnamedPaul,whowasonthewrestlingteam,bragged（吹牛）to

everyoneelsethathisaiiplanewouldwin."Iamthestrongest,“Pautsaid."SoI

willbeabletothrowmyairplanethefarthest.vHowever,whilePaulwassayingthis,

anotherstudent,Brian,wasthinkinghowhecouldwin.Briandidnotplayanysports

andwasnotverystrong.Buthelovedairplanesandreallywantedtowinthecontest.

Brianrealizedwhathehadtodo.Hewenttothestoreandboughtabigstackof

paper.Whenhegothome,hetookthepaperintohisbackyard.Hetookapieceof

paperandfoldedanairplane.Itdidn?tgoveryfar,soBriantookanothersheetand

foldedanotherairplaneandthrewit.Thisairplanewentalittlefarther.Briankept

foldingdifferentkindsofairplanesandthrowingthem.Somewentveryfarandsome

didnot.Finally,whenBrianhadusedallthepaper,hewalkeduptotheairplanethat

hadflownthefarthestandpickeditup.

注意：

1.续写的词数应为150左右；

2.请按如下格式作答。

Thenextdaywasthecontest._________________________________________

Brianwonbecausehetriedoutmanysolutionstotheproblemofhowtomakean

airplaneflyveryfar.____________________________________________________

unit1teenagelife

单元综合检测

第一部分阅读理解（共两节，满分50分）

第一节（共15小题；每小题2.5分，共37.5分）

阅读下列短文，从每题所给的A、B、C和D四个选项中选出最佳选项。

A

Lizzie*sdiaryfromAntarctica(南极洲I)

Day3：TuesdayDecember2

WeplannedtogotoRotherathatmorning.We'dbestayingthereforthenexttwo

weeks.BecauseAntarcticaisthewindiestplaceonearth,sometimesyoucan，tflyat

all.

Wehadanervouswaitoverbreakfasttofindoutifwe'dbeleavingthatday.

PeoplehavetostayinStanleyforweekswhilethepilotswaitforgoodweather.

Itturnedclearat9：30andwetookoffat10：30onalittleredplanecalled

Dash-7.Butevenwhenwewereintheair,therewasstillachancewewouldn，tbeable

toflythewholeday.

Day4：WednesdayDecember3

AfterwakingupintheAntarcticforthefirsttimetodayIcanunderstandwhy

everybodywhocomesherefallsinlovewiththeplace.Itisreallybeautiful.

We'restayingatRotheraSurveybasewithmountainsoficeallaround.Itisvery

cold,buttheregularshereareoftenseenwalkingaroundinT-shirts!

Day5：ThursdayDecember4

IwokeuptoanotherbeautifulsunnydayhereintheAntarctic.Tmtoldit，sabit

coldertoday,butit，snotverywindysoitfeelswarmer.Thoseofuswhoarenewto

thebasehavetodoaspecialtrainingcoursebeforewe'reallowedtogooffbaseto

otherstationsortogosnowboardingoverthenearbyhill.

Day7：SaturdayDecember6

Notacloudintheskyandit'swarmenoughtositoutside(inajacket).

Themostamazingthingaboutthisplaceishowthescenerychangeseveryday.

AtfirstIthoughtIwasgoingmad.I'dstepoutsideinthemorningandthink,

Tmsurethatbigmountainoficewasn，tthereyesterday.vIt'sbecausetheseaice

isalwaysmoving—slowlythankfully!

【语篇解读】本文是一篇旅游日记。主要记述了作者在南极旅行时的经历。

1.WhendidLizziesitoutsidewearingajacket?

A.OnTuesday.B.OnWednesday.

C.OnThursday.D.OnSaturday.

D［细节理解题。根据Day7:SaturdayDecember6段中提到“Notacloudin

theskyandit5swannenoughtositoutside(inajacket).”可知，这一天不太冷，室

外也挺暖和，这里备注写上是穿上了夹克，这天是第七天，12月6号，星期六，

故选D。］

2.WhatcouldstopLizziefromleavingStanleyforRothera?

A・Strongwinds.B.Thickclouds.

C.Mountainsofice.D.Lowtemperature.

A［推理判断题。在Day3：TuesdayDecember2段中提到uPeoplehaveto

stayinStanleyforweekswhilethepilotswaitforgoodweather.,可决口，人们必须

待在Stanley,因为飞行员在等一个好天气，前文又提到"BecauseAntarcticaisthe

windiestplaceonearth”，由此推测应该是大风天气使得他们无法起飞，不能离开

Stanley去Rothera,故选A。］

3.HowdidLizziefeelduringherstayintheAntarctic?

A.Afraid.B.Nervous.

C.Amazed.D.Bored.

C［推理判断题。在Day4：WednesdayDecember3段中提至"Afterwaking

upintheAntarcticfbrthefirsttimetodayIcanunderstandwhyeverybodywhocomes

herefallsinlovewiththeplace.ltisreallybeautiful.可知，早上起来发现南极洲的

风景实在是太棒了，一眼就爱上了，在最后一天的日记中也说^Themostamazing

thingaboutthisplaceishowthescenerychangeseveryday.",由立匕可推断，Lizzie

感觉南极很神奇，故选C。］

B

Movingflighttimesfromnighttodaycouldreduceairtravefscontributionsto

globalwarming,anewstudysuggests.Schedulingmoredaytimeflightsmayreduce

theinfluenceofcontrails（飞机凝迹）——thevisiblelinesofwhitesteamthatmany

planesleavebehindtheminthesky.

Theroleofcontrailsinclimatechangeisstillbeingstudied,butsomescientists

believetheycontributetothegreenhouseeffectbytrappingheatintheatmosphere.

NicolaStuber,firstauthorofthestudy,suggeststhatcontrails，overallimpacton

climatechangeisalmostasbigasthatofaircraft'scarbondioxideemissions（排

放）overahundred-yearperiod.Aircraftarebelievedtoberesponsiblefor2%-3%of

humancarbondioxideemissions.Likeotherhigh,thinclouds,contrailsreflectsunlight

backintospaceandcooltheplanet.However,theyalsotrapenergyintheatmosphere

andincreasethewarmingeffect.

Stuberandotherscientistsbelievethattheeffectofthecontrailsisbig."On

average,thegreenhouseeffectcontrolstheeffectsofcontrails,“saidStuber,a

meteorologistatEngland，sUniversityofReading."Thewarmingeffectisfargreater

forcontrailsleftbynightflights,“Stuberadded."Thecoolingeffectonlyhappens

duringthedaywhenthesunisup.Duringthenightthegreenhousewarmingisno

longerbalancedandthatiswhythecontributionofnight-flightissolarge.

Mostcommercialairlinetrafficoccursduringdaylighthours.Forexample,only

oneinfourUnitedKingdomflightsisanightflight,butthoseflightscreatesome60%

ofthewarmingcreatedbycontrails,thestudyreports.

【语篇解读】本文是一篇说明文。主要内容是将飞机飞行时间从晚上改到

白天，即安排更多的日间航班可能会减少航空旅行对全球变暖的影响，并阐述了

其原因。

4.Howdocontrailsincreasethegreenhouseeffect?

A.Theygiveoffheat.

B.Theyabsorbdaylight.

C-Theytrapheatintheatmosphere.

D.Theyreflectsunlightbackintospace.

C［细节理解题。根据第二段"...theycontributetothegreenhouseeffectby

trappingheatintheatmosphere.可知，飞机凝迹是通过它们在大气中吸收热量来

增加温室效应的，故选C。］

5.Whatdoestheunderlinedword"they"inParagraph3referto?

A.Carbondioxideemissions.

B.Contrails.

C.Flights.

D.Thinclouds.

B［代词指代题。根据第三段最后两句介绍了飞机凝迹的两大作用：一是将

阳光反射回太空、使地球降温，二是将能量困在大气层、加剧温室效应，再根据

they所在的句子aHowever,theyalsotrapenergyintheatmosphereandincrease

thewarmingeffect.可知they指代的是“飞机凝迹"，故选B。］

6.WhatdidStuberexplainaboutthecontrailsinParagraph4?

A.Whattheirfunctionis.

B.HowtheycooltheEarth.

C.Whytheycreatebigwarmingatnight.

D.Howbigtheireffectis.

C［推理判断题。通读第四段内容可知，飞机凝迹受温室效应的控制，降温

效果只发生在太阳升起的白天，夜间的温室效应不再平衡，这就是夜间飞行留下

的尾迹使温室效应更加严重的原因，Stuber是通过解释为什么它们会在晚上产生

很大热量的原因来解释飞机凝迹的，故选C。］

7.Whatcanbeasuitabletitleforthetext?

A.AirlinesShouldScheduleFlights

B.NightFlightsFaceaNewChallenge

C.AirplaneContributesMosttoGlobalWarming

D.MoreDayFlightsMayReduceGlobalWarming

D［标题归纳题。通读全文以及根据第一段的第一句aMovingflighttimes

fromnighttodaycouldreduceairtravefscontributionstoglobalwarmingv可知本

文主要内容是：将飞机飞行时间从晚上改到白天，即安排更多的日间航班可能会

减少航空旅行对全球变暖的影响，故D项能概括本文主题，故选D。］

C

GrandparentsAnsweraCall

Asathird-generationnativeofBrownsville,Texas,MildredGarzaneverplanned

tomoveaway.EvenwhenherdaughterandsonaskedhertomovetoSanAntonioto

helpwiththeirchildren,shepolitelyrefused.Onlyafterayearoffriendlydiscussion

didMs.Garzafinallysayyes.Thatwasfouryearsago.Todayallthreegenerations

regardthemoveasasuccess,givingthemacloserrelationshipthantheywouldhave

hadinseparatecities.

NostatisticsshowthenumberofgrandparentslikeGarzawhoaremovingcloser

toadultchildrenandgrandchildren.Yetthereisevidencesuggestingthatthetrendis

growing.EvenPresidentObama，smother-in-law,MarianRobinson,hasagreedto

leaveChicagoandmoveintotheWhiteHousetohelpcareforhergranddaughters.

Accordingtoastudyby,83percentofthepeoplesaidMrs.

Robinson'sdecisionwillinfluencegrandparentsintheAmericanfamily.Two-thirds

believemorefamilieswillfollowtheexampleofObama，sfamily.

“Inthe1960swewereallalittlewildandcouldn，tgetawayfromhomefar

enoughorfastenoughtoprovewecoulddoitonourown,“saysChristineCrosby,

publisherofGrand,amagazineforgrandparents."Wenowrealizehowimportant

familyisandhowimportantitistobenearthem,especiallywhenyou'reraising

children.,,

Movingisnotforeveryone.Almosteveryg