八年级英语下册Unit 4 课时2 Section A 2a-2d大单元分层作业

Unit4TheWondersofNature

课时2SectionA(2a-2d)分层作业

9作业导航

核心知识速记（”基础达标02能力提升（）3拓展培优（）4思维进阶

核心知识速记

词汇

divev.&n.潜水；跳水researchv.&n.研究；调查deepadj.深的

depthn.深度unusualadj.特别的；不寻常的bottomn.底部

oceann.海洋creaturen.生物rubbishn.垃圾

pressuren.压力

短语

diveinto潜入thebottomof在...底部deepsea深海

oceanfloor海底deep-searesearcher深海研究者createlight发光

highpressure高压protectthedeepsea保护深海

句型

1.Whyarcsomanycountriesresearchingthedeepsea?

2.Someanimalsareblind,buttheycan“sec”aswellasothers.

3.Thereisrubbishevenat11,000metresdeep.

01基础达标

一、单词默写（根据音标写单词）

1./dalv/v.&n.潜水；跳水2.S3：If/v.&n.研究；调查

3./di:p/adj.深的4./"An'ju：3uol/adj.特别的;不

寻常的

5./'botam/n.底部6./'oufon/n.海洋

7./'kri：tfo(r)/n,生物8./'rAhiJ/n.垃圾

【答案］I.dive2.research3.deep4.unusual5.bottom6.ccean7.creature8.rubbish

二、词组默写

I.潜入深海_____________________2.在...底部______________________

3.深海_____________________4.海底_____________________

5.深海研究者____________________6.发光_____________________

7.高压_____________________8.保护深海_____________________

9.下潜深度_____________________10.不寻常的能力_____________________

【答案】1.diveinto(hedeepsea；2.atthebottomof：3.deepsea；4.oceanfloor

5.deep-searesearcher；6.createlight；7.highpressure；8.protectthedeepsea;9.divedepth

10.unusualability

三、根据要求完成句子。

1.很多国家正在研究深海。

Manycountriesare.

2.海底有很多奇特的生物。

Therearemanystrangecreatures.

3.有些深海动物是盲的，但它们能和其他动物一样“看见”。

Somedeep-seaanimalsareblind,buttheycan"see”others.

4.奋斗者号在2020年潜入了马里亚纳海沟“

FendouzhetheMarianaTrenchin2020.

5.甚至在11000米深的地方都有垃圾。

Thereisrubbisheven___________________________.

6.研究深海对人类很重要。

Itisimportantforhumans.

7.深海有巨大的压力。

Thedeepseahas.

8.我们应该为保护深海做些事情。

Weshouldthedeepsea.

【答案】1.researchingthedeepsea;2.atthebottomoftheocean;3.aswellas;4.divedinto

5.at11.000metersdeep;6.toresearchthedeepsea;7.highpressure;8.dosomethingtoprotect

02能力提升

四、用括号内所给词的适当形式填空。

I.Theman(dive)intotheseatosavetheboyyesteiday.

2.Scieniisisare(research)thesecretsofthedeepsea.

3.Whatisthe(deep)oftheMarianaTrench?

4.Therearemany(usual)plantsinthedeepsea.

5.At(he(bottom)oftheocean,thereisnolight.

6.Many(creature)liveinthedarkdeepsea.

7.Toomuch(rubbish)pollutesthedeepsea.

8.The(press)isveryhighinthedeepsea.

［答案］1.dived2.researching3.depth4.unusual5.bottom6.creatures7.rubbish8.pressure

五、阅读短文，从方框中选择适当的词并用其正确的形式填空（每词限用一次）。

deep,research,dive,creature,bottom,unusual,light,rubbish,ocean,pressure

Thedeepseaisoneofihegreatestwondersofnature.Ilismorethan200metersI.

belowthesealevel.Forthousandsofyears,peopleknewlittleaboutthishiddenworldbecauseit

istoohardtoreach.Withthedevelopmentoftechnology,scientistsbeganto2.thedeep

seacarefully.In2020,China'smannedsubmersibleFendouzhesuccessfully3.lothe

MarianaTrench,thedeepestplaceofthe4.,reachingadepthofabout10.984meters.

Althe5.________ofthesea,theenvironmentisveryspecial.Itiscompletelydark,extremely

coldandfullofhigh6..However,therearestillmillionsof7.livingthere.

Mostofthemhave8.abilitiestoliveinsuchhardconditions.Somecanproduce

9.bythemselves,whilesomeareblindbuthavestrongabilitytofeeltheworldaround

them.

Sadly,humanactivitiesbringtroubletothedeepsea.10.canbefoundevenat11,000

metersdeep,whichshocksmanyscientists.Itisourdutytoprotectthedeepseaandkeepits

ecosystembalanced.Thisamazingworldisnotonlyatreasureofnaturebutalsoanimportantpart

ofourplanet.

【答案】1.deep2.research3.dived4.ocean5.bottom6.pressure7.creatures8.unusual9.light

10.rubbish

【导语】本文介绍了深海的环境、生物特点、中国奋斗者号的探索成就，以及深海污染与保

护的重要性。

1.句意：它有200多米深。deep深的。故填deep。

2.句意：现在科学家开始研究它。begintodosth.用原形researcha故填researchc

3.句意：奋斗者号成功潜入马里亚纳海沟。2020年用过去式dived0故填dived。

4.句意：海洋最深的地方。ocean海洋。故填ocean0

5.句意：在海底。atthebottomofo故填bottomo

6.句意:有高压。highpressureo故填pressureo

7.句意：但是许多生物仍然生活在这里。many后用复数creatureso故填creatureso

8.句意：它们有不寻常的能力。unusual不寻常的。故填unusualo

9.句意:有些能自己发光。makelight。故填light。

10.句意：垃圾甚至到达11000米深。rubbish垃圾。故填rubbish,,

拓展培优

六、阅读还原。

ThedeepseaisamysteriousandamazingworldthatcoversmorethanhalfoftheEarth's

surface.1.Mostpeopleknowverylittleaboutitbecauseitistoofarandtoohardto

reach.Thedeepseastartsat200metersbelowthesealevel,andthedeepestpointistheMariana

Trench.2.

Lifeinthedeepseaisverydifferentfromthatonland.Thereisnosunlighthere,soitisvery

darkallyearround.Thewaterisicycold,andthewaterpressureissohighthatitcaneasilybreak

commonmachines.3.Somearesmallandlooklikestars,whilesomeare4.

andhavestrangeshapes.Manyofthemcanmakelightbythemselves,whichmakesthedarkdeep

sealooklikeaskyfullofstars.

Inrecentyears,Chinahasmadegreatprogressindeep-seaexploration.5.Ithas

helpedscientistscollectsamplesandtakeclearphotosofthedeep-seaworld.Nowmoreandmore

peoplerealizetheimportanceofthedeepseaanddecidetoprotectit.

A.Itismorethan10,000metersde叩.

B.FendouzhcisagreatChinesemannedsubmersible.

C.Buttherearestillmanywonderfullivingthingshere.

D.Itisoneofthemostwonderfulnaturalwonderson

Earth.

E.Somefishcanlivewithouteatingforalongtime.

F.Somecreaturesareverylarge.

【答案】BACED

【解析】

1.答案B开头总述深海是自然奇观，引出下文。故选Bo

2.答案A前一句讲最深点是马里亚纳海沟，A说明深度。故选Ao

3.答案C环境恶劣但仍有生物，构成转折。故选Co

4.答案E后一句讲照亮黑暗，对应“自己发光”。故选E。

5.答案D前一句讲奋斗者号，D介绍它。故选Do

七、阅读理解。

ThedeepseaisoneofthemostamazingnaturalwendersonEarth.Itisaworldfullof

mysteriesandsurprises.Thedeepseabeginsat20()metersbelowthesealevel,wheresunlightcan

nolongerreach.ThedeepestplaceonEarthistheMarianaTrench,withadepthofabout10,984

meters.

Livinginthedeepseaisverydifficult.Theenvironmentisterrible:nosunlight,freezingcold

waterandveryhighwaterpressure.Butsurprisingly,therearestillthousandsofrareseacreatures

livinghere.Manyofthemhavespecialabilitiestofitthehardenvironment.Someareblindbut

canfecifoodaroundthemeasily.Somecanmaketheirownlighttoattractsmallanimalsorfind

partners.

China'sFendouzhemannedsubmersiblehasmadehistoricachievementsindeep-sea

exploration.In2020,itcompletedseveraldivesintotheMarianaTrenchandfilmedthereal

deep-seaworldforpeople.1(alsocollectedrocks,waterandothersamplesforscientificresearch.

However,thedeepseaisfacingseriouspollutionnow.Rubbishfromlandiscarriedintothesea

byriversandtides,anditcanreacheven11,000metersdeep.Thisrubbishhurtsseaanimalsand

breaksthenaturalbalance.Scientistsandenvironmentalistsarecallingonpeopletotakeactionto

protectthedeepsea,sothatthiswonderfulwonderofnaturecanstaysafeandhealthy.

I.Howdeepdoesthedeep>eabegin?

A.At100metersbelowsealevel.

B.At200metersbelowsealevel.

C.At1,000metersbelowsealevel.

D.At10,000metersbelowsealevel.

2.WhatisthedeepestplaceonEarth?

A.TheNileRiver.

B.theSaharaDesert.

C.TheMarianaTrench.

D.TheDeadSea.

3.Whatspecialabilitydosomedeep-seacreatureshave?

A.Theycanrunveryfastonland.

B.Theycanmaketheirownlight.

C.Theycanflyinthesky.

D.Theycanlivewithoutwater.

4.WhendidFendouzhedivsintotheMarianaTrenchmanytimes?

A.In2O18.

B.Iii2019.

C.In2020.

D.In2021.

5.Whyisthedeepseaindangernow?

A.Becauseofseriousrubbishpollution.

B.Becausetherearetoomanyanimals.

C.Becausethewaterbecomeswarm.

D.Becausethereisnosunlight.

【答案】BCBCA

【解析】

I.答案B文中明确提到Thedeepseabeginsat200metersbelowsealevel0故选Bo

2.答案C文中提到Thedeepestplaceis(heMarianaTrench0故选Co

3.答案B文中提到Somecanmakelighttoattractsmallanimalso故选B。

4答案C文中提到In2020,China,sFendouzhedivedirtotheMarianaTrenchmanytimes«

故选C。

5.答案A文中提到thedeepseaisfacingseriouspollution...rubbish...<,故选A。

八、完形填空。

Thedeepseaisawonderfuland1.worldthatfewpeoplehaveseen.Itis

2.200metersunderthesea,wheresunlightcannevercomein.Thedeepestplaceofthe

EarthistheMarianaTrench,about10.984meters3..Theenvironmenthereisvery4.—itisdark,

coldandhasextremelyhighwater5..

6.,manyamazingseacreaturesstilllivehere.Theyhavedeveloped7.

abilitiestoliveinsuchhardconditions.Somecan8.lightbythemselves,andsorreare

blindbuthaveastrongsenseoftouch.

In2020,China*ssubmersibleFendouzhe9.intotheMarianaTrenchandhelped

peopleknowmoreaboutthismagicworld.Butnow,thedeepseais10.becauseof

rubbishpollution.Wemusttryourbesttoprotectit.

1.A.boringB.amazingC.commonD.dangerous

2.A.aboveB.belowC.onD.at

3.A.deepB.longC.wideD.high

4.A.easyB.comfortableC.hardD.warm

5.A.lightB.temperatureC.pressureD.noise

6.A.SoB.ButC.BecauseD.If

7.A.usualB.unusualC.smallD.big

8.A.makeB.seeC.hearD.feel

9.A.flewB.walkedC.divedD.ran

10.A.safeB.healthyC.dangerousD.perfect

【答案】本文主要介绍深海环境、深海生物的特殊能力、中国奋斗者号的探索，以及深海污

染与保护。

1.B2.B3.A4.C5.C6.B7.B8.A9.C10.C

【解析】

1.句意：深海是奇妙的世界。amazing奇妙的。故选B。

2.句意：在海面下200米。below在..下面。故选B0

3.句意：约10984米深。deep深的.故选A。

4.句意：环境非常艰苦。hard艰苦的。故选Co

5.句意：高水压。waterpressure水压。故选Co

6.句意：但仍有生物生存。表示转折用buto故选Bo

7.句意：它们有不寻常的能力。unusual不寻常的。故选B。

8.句意:有些能自己发光。makelight发光。故选A°

9.句意：奋斗者号潜入海沟。dive潜水，过去式divedo故选C。

10.句意：深海因垃圾污染变得危险。dangerous危险的。故选C。

04思维进阶

Deep-SeaExplorationandProtection

ThedeepseaisoneofthemostwonderfulnaturalwondersonEarth.Itcoversnearly70percent

oftheEarth'ssurfaceandholdsmillionsofunknowncreatures.Itisdark,coldandfullofhigh

pressure,butitisalsoaplacefullofbeautyandmysteries.Foralongtime,humansknewalmost

nothingaboutthedeepseabecauseitwastoodifficulttoreach.

Withthedevelopmentofscienceandtechnology,deep-seaexplorationhasbecomepossible.

China,sFendouzhemannedsubmersibleisagreatachievementinthisfield.Itcandivetothe

deepestpartoftheMarianaTrenchandhelpscientistsstudytheoceanfloor,collectvaluable

samplesandlearnaboutthelivesofdeep-seacreatures.Thesestudieshelphumansunderstandthe

historyoftheEarthandthesecretsofnature.

However,thedeepseaisnowingreatdanger.Rubbishfromdaily