冀教版九年级Unit5 Look into Science单元练习含答案.docx

冀教版九年级Unit5 Look into Science单元练习含答案.docx

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冀教版九年级Unit5LookintoScience单元练习含答案

2020年精编冀教版英语资料

Unit5LookintoScience单元练习

一、单项选择

1.Fatherwon'tallowmetoplayoutside Iwashupthedishes.

A.ifnotB.ifC.unlessD.because

2.Canyou it?

Ididn'tfollowyoujustnow.

A.repeatB.rememberC.replyD.report

3.---Ohno!

WhatcanIdowithmycomputer?

---PressEnterandfollowtheon-screen（屏幕） .

A.collectionB.instructionsC.educationD.questions

4.Isuggest nextweek.

A.gomountainclimbingB.willgomountainclimbing

C.togomountainclimbingD.goingmountainclimbing

5.Thisgroupis ofsevenmen.

A.madeB.madeupC.helpwithD.connectwith

6. thekidhasnoparents, hisgrandparentslookafterhimwell.

A.Asthough;/B.Asthough;but

C.Eventhough;/D.Eventhough;but

7.Ifyou thebook,you'llfindsomethingsurprising.

A.turndownB.turnonC.turnoffD.turnover

8.Bettywenttothemuseumandsawmanypictures weredrawnbyafamousperson.

A.thatB.whoC.whatD.whom

9.I'llremembertheoldbuildings Ivisitedinthevillage.

A.whereB.whichC.whoD.what

10.---Iwanttofindapartnertopracticerollerskating.

---MyfriendFredisaperson mayhelpyoualot.

A.whichB.whoseC.whoD.whom

二、完形填空

Technologyhasmadelifemucheasierforchildrentoday.Itis11 forthemtoplay,tolistentomusic,andto12 intouchwiththeirfriends.13 thehelpoftechnology,thereseemstobenothingthatchildrencan'tdonow.

Technologyalsohelps14 toknowmoreabouttheirchildren.Forexample,ifachildisgivenamobilephonewithatracking（追踪）device,hisparentscanfindout15 heisgoingwiththehelpofthemobilephone.

However,therearealsosomebad16 oftechnology.Forexample,ithasbecomeeasierforbadpeopletogetintouchwithchildrenwiththehelpoftechnology.Theycanfindpersonalinformationaboutchildrenthroughspecialwaysonthe17 .Soitisveryimportantforparentsto18 theirchildrentokeeppersonalinformationsafewhilesurfingtheInternet.

Besidesthis,thereisanotherbadthingabouttechnology.Childrennow19 lesstimedoingexercisethanbefore.Theyaretoo20 playingonlinegames.Theycanevenplaycomputergamesalldaylong.Ifyoudon'tpushthemoutofthedoor,theywon'tvolunteertogooutandplay.Thisisnotgoodfortheirhealth.

Therefore,teachingchildrentherightwaytomakegooduseoftechnologyisveryimportant.

11.A.easierB.moredifficult

C.moreimportantD.harder

12.A.loseB.makeC.keepD.contact

13.A.ForB.UnderC.WithD.Over

14.A.teachersB.friendsC.parentsD.classmates

15.A.whenB.whomC.whyD.where

16.A.sidesB.placesC.choicesD.winds

17.A.phoneB.TVC.radioD.Internet

18.A.teachB.learnC.punishD.lend

19.A.payB.takeC.costD.spend

20.A.lazyB.freeC.busyD.hard-working

三、阅读理解

A

Whatshouldyoutakeinwithyouwhenyoutakeanexam?

Pen,pencil,eraser,ruler…,anddon'tforgetabottleofwater!

AccordingtoastudyattheBritishPsychological（心理学的）SocietyAnnualConferenceheldinLondon,studentswhobringwaterintoexamsmayimprovetheirgradesbyupto10percent.

ScientistsattheUniversityofEastLondonandtheUniversityofWestminster,UK,didastudyon447students.Thestudentswerestudyingfordifferentdegrees（学历）attheUniversityofEastLondon.Only25percentofthementeredtheexamhallwithsomethingtodrink.

Scientiststhencomparedtheirexamresultswiththeirnormalschoolworkgrades.Theyfoundthatallthosewhohadbroughtdrinkswiththemgotbettergradesbybetween2and10percent.

Itisunclearwhydrinkingwaterimprovesexamresults.Butscientistssayhavingenoughwaterinourbodiesandnotfeelingthirstycouldhaveahelpfuleffectonourbrains.Drinkingwatermayalsocutdownonanxiety（焦虑）,whichhasabadeffectonexamperformances,accordingtoChrisPawson,PhD,oftheUniversityofEastLondon.

"Whatevertheexplanation,itisclearthatstudentsshouldtryhardtostayhydrated（含水的）withwaterduringexams,"hesaid.

Sonexttime,whenyouaregoingtohaveabigexam,trybringingabottleofwaterwithyou.Whoknows—itmayhelpyoupasstheexam!

21.Howmuchmaythestudentsimprovetheirgradesmostiftheybringwaterintoexams?

A.By2%.B.By8%.C.By10%.D.By25%.

22.Howmanystudentsinthestudygotbettergrades?

A.About112studentswhobroughtdrinksorwaterintotheirexams.

B.Allthe447studentswhocomefromtheUniversityofEastLondon.

C.About300studentswhotookpartinthestudy.

D.About10percentofthestudentswhostudieddifferentsubjects.

23.Theunderlinedphrase"cutdownon"probablymeans .

A.increaseB.bringC.reduceD.change

24.Accordingtothepassage,howdoeswaterhelpstudentsinexams?

a.Itisgoodfortheirbrains.

b.Itmakesstudentssmarter.

c.Ithelpsstudentsstaycool.

d.Ithelpsstudentsstayawake.

A.abB.acC.bcD.cd

25.Wherecanyouprobablyreadthearticle?

A.Fashionmagazine.B.Textbook.

C.Travelguide.D.Newspaper.

B

Haveyoueverrubbedyourhandstogetherwhentheygetcold?

Whydowedothat?

Wedothatforfriction.Frictionhappenswhentwothingsthataren'tverysmoothrubtogethertomakeheatenergy.Thefasteryourubtwothingstogether,themorefriction（andheat）youcanmake.Let'sdiscoverfriction!

WHATYOU'LLNEED:

●Soap●Water●Yourhands!

WHATTODO:

①Makesureyourhandsaredirty.

②Rubyourhandstogetheruntilyoufeeltheheatofyourhands.

③Now,usesoapandwatertogetyourhandsveryslippery（滑的）.

④Trytomakefrictionhappenwhileyourhandsareslippery.

⑤Pleasewritedownwhathashappened.

LET'STALK!

Frictionisanenergythathappenswhentwothingstubtogether.Whenfrictionhappens,itmakesheat!

Whenyourhandsareslippery,theywon'tmakeverymuchfrictionandyourhandswon'tgetsohot.

DIDYOUKNOW?

●Frictionhappenswhenyoustopyourfastrunningbike.

●Ancientpeoplemadefiresbyrubbingtwopiecesofwoodtogether.Frictionhappenedthoughtheydidn'tknowit.

Frictioniseverywhere.Haveyouevernoticedsituationswherefrictionishappening?

Ifnot,askyourparentstotakeyououtinacar.Ifitisnothot,touchthetires（轮胎）ofthecarbeforeandafterashortdrivetoseehowmuchwarmertheygetfromfriction.

26.Thistextismostprobably .

A.asciencereportB.acaradvertisement

C.arubbingintroductionD.achemistryprogramme

27.You'dbettermakeyourhands togetheatwhenyourubthem.

A.slipperyB.dryC.wetD.smooth

28.Whatdoestheword"friction"inthistextmeaninChinese?

A.摩擦B.冷却C.膨胀D.震动

29. isnotanexampleoffriction.

A.BikeridingB.Cardriving

C.HandsrubbingD.Frictiondiscovering

30.What'sthelastcolumn（栏目）?

A.THINKITOVER!

B.WHATHAPPENED?

C.EVERYDAYACTIOND.WORKWITHPARENTS

C

Weoftenpraisetheworldofscience.

Itexplainstheworldandmakesourliveseasierwithtechnology.Oneofthemostexcitingfieldsinscienceisartificialintelligence（人工智能,AI）.Thisisanareawherescientistsareworkingoncreatingmachinesthatthinklikehumans.

However,oneofthemostfamousscientistshasaverydarkwarningforusaboutthistypeoftechnology.

"Thedevelopmentoffullartificialintelligencecouldspelltheendofthehumanrace,"saidProfessorStephenHawkingtotheBBC.

Hawkingisawell-knownBritishphysicistandauthorofbestsellingsciencebookABriefHistoryofTime.Thiswarningcameaftercommenting（评论）thetechnologyheusestospeakwith.AsHawkinghasgotaseriousdiseasecalledALS,heneedsanAIcomputertocommunicate.ThecomputerlearnshowHawkingthinksandsuggeststhewordshemaywanttousenext.

ThisisabasictypeofAI,whichisveryuseful,yetHawkingfearsthepossibilityofcreatingtechnologythatcanmatchorsurpasshumanintelligence.Andit'seasytoimaginehowterriblethingsmaybe.ManyTVshowsandfilmsshowbig,killermachinesthatarefarclevererthanus."Humans,whoarelimited（限制）byslowbiologicalevolution（进化）,couldn'tcompete,"saidHawking.

Butnoteveryscientistispessimistic（悲观的）aboutAItechnology."Ibelievewewillbeincontrolofthetechnologyforalongtime,"saidRolloCarpenter,creatorofCleverbotintheUK,whichisasoftwareprogramthatrememberspastconversations,"Theadvantagesofittosolvemanyoftheworldproblemswillberealized."

InwhatdirectiondoyouthinkAIisheading?

Shouldwebehopefulorfearful?

31.WhichofthefollowingisTRUEaboutAI?

A.Itmakesourliveseasier.

B.Thetechnologyisnotverypopularnow.

C.Scientistshaven'tcontrolledthetechnology.

32.ThewritertookHawkingasanexampleto .

A.explainhowAIhashelpedus

B.showAIhasalreadybecomepartofourlife

C.suggestthatAImightbecomedangerousforhumans

33.Whatdoestheunderlinedword"surpass"meaninthepassage?

A.象征B.促进C.超越

34.Wecanknowfromthelastparagraphthat .

A.RolloagreeswithHawking

B.RolloisaBritishcreator

C.RolloinventedCleverbotintheUS

35.Whichofthefollowingcanbeasuitabletitleforthisarticle?

A.AI:

AFriendoranEnemy

B.TheFutureofHumanBeings

C.TheFightBetweenHumansandAI

D

DNAisthewhole"map"ofthehumanbody.Itissomethingthatallhumanshave,andittellsthebodywhattodo.DNAisthereasonthatwelooklikeourparents,becausewegetsomeoftheirDNAtomakeourown.

Peoplehavebeentryingtounderstandthehumanbodyforalongtime.InI860,MrMendeldiscoveredwhywelookthesameasotherpeopleinourfamily.Itisbecauseof