《高中英语必修第三册Unit 4 Discovering Useful Structures》课件

Unit4单词精讲Nothingbutatear,that'sallforbreakfastWatchingyoupretendyou'reunaffectedYou'repullingourconnections,expectingme_______yougo....Ilookinyourdirection,hopingthatthemessagegoesSomewhereclosetoyouClosetoyou...Workinghard__________itNowyourfearisreckless,andit'soutofyourcontrolWouldyouletitgo?...Leadintoletattributeoradverbial?toperfectFinding1....andscientistsworkhardtofindanswers…2.Theymakevehiclestocarrybravepeopleintospacetofindoutthesecretsoftheuniverse.3.Forexample,America'sNASAspaceagencylaunchedVoyager1on5September1977tostudydeepspace...4.Thesedisastersmadeeveryonesadanddisappointed,butthedesiretoexploretheuniverseneverdied.5.Chinabecamethethirdcountryintheworldtoindependentlysendhumansintospacein2003…adverbialadverbialattributeadverbialattributeLookatthefollowingsentencesandfocusontheitalicizedinfinitives.Inpairs,discusstheirfunctions.1.Itrainedforalongtimetoflyairplanesasafighterpilot..(作_________)2.Asweallknow,anastronautneedstobehealthyandcalminordertoworkinspace..(作_________)3.Firstofall,youmustbeintelligentenough

toget

arelatedcollegedegree..(作__________)4.Somescientistweredeterminedtohelphumansrealisetheirdreamtoexplorespace..(作______)目的状语定语目的状语目的状语Readthefollowingsentencesandfindthewordsthathavebeenomittedtoavoidrepetition.DefinitionofEllipsis5.On12April1961,YuriGagarinbecamethefirstpersonintheworldtogointospace..(作______)定语Summary:

1.不定式的结构：________________

2.分析上面的句子，我们知道在描述太空探索时，动词不定式不仅可以用来表______，还可以用来作_______，表_______。to+do原形目的定语修饰不定式在句中的功能：（一）作定语不定式作定语，一般放在被修饰的名词、代词后面。例如：Ihavealotofworktodo.Sheisthefirststudent

tocometoschool.Thereisnothingtoworryabout.

只能用动词不定式做定语的情况例：1.Pleasemakeaneffort

tocatchthebus.2.Hemadeapromise

tocomehereontimetomorrow.1.当修饰的名词是ability,ambition,attempt,chance,courage,desire,decision,effort,failure,moment,promise,right,time,wish…（一些表示企图、努力、愿望、打算、能力

等意义的名词）只能用动词不定式做定语的情况例：1.Hewasthefirstonetothinkoftheidea.2.Youaretheonlypersontobelate.3.Themanageristhelasttocometothemeeting.2.当修饰的名词前有theonly,thenext,thebest,thefirst,thelast,以及由序数词或形容词最高级修饰的名词常常用不定式作定语。只能用动词不定式做定语的情况例：1.Doyouhaveanything

tosay?2.Thereisnothing

toworry

about.3.Iwanttogetsomething

todrink.3.当修饰的词为something,nothing,anything等不定代词时。4.当定语表示未来的还没做的动作时。例：Thelettertobewrittenistomyfather.Themattertobediscussedisimportant.（二）作状语不定式作状语，用来修饰动词、形容词和副词。例：Icomeheretosaygood-byetoyou.Soasnottodisturbthebaby,Iwalkedquietly.目的状语：可用在句首常用结构：todo;inordertodo,soastodo,so/such…astodo,etc.※不定式作目的状语时，其动作通常迟于谓语动词的动作。例：Isaidthattoencouragehim.（二）作状语3.结果状语：常与only,enough或too连用,用于“too...to”；“enoughto...”；“onlytodo”句型中。例：Hestudiedhardonly

tofailtheexam.

Heisoldenough

togotoschool.

Sheissoproudas

tolookdownuponothers.2.原因状语：多用于“sb.+be+adj.+todo”句型中。例：

I’mgladtoseeyou.

Shewasdisappointedtohearthenews.现在分词与不定式作结果状语的区别例：1.HewenthometofindhisoldfriendGeorgeoutsidethedoor.2.Thechildfell,strikinghisheadagainstthedoorandcuttingit.动词不定式作结果状语强调的是一种意想不到的结果；而现在分词作结果状语强调的是一种顺承的，必然造成的结果。Rewritethesentencesbyusinginfinitivesasattribute.Functionsofinfinitivesasattribute1.In2003,YuriMalenchenkobecamethefirstpersonwhogotmarriedinspace.

=In2003,YuriMalenchenkobecamethefirstperson

______________inspace.2.Mankindhasalwaysbeencuriousabouttheuniverseandmanypeoplehavedreamedthatonedaytheywouldflyintospace.

=Mankindhasalwaysbeencuriousabouttheuniverseandmanypeoplehavedream__________space.togetmarriedtoflyintoRewritethesentencesbytakingouttheunnecessaryparts.3.ButJanisAdkinshastheabilityanddesirethathecandosomeusefulworkforthedisabled.

=ButJanisAdkinshastheabilityanddesire___________

__________forthedisabled.4.IusuallyhavealotofmeetingswhichIhavetoattendnextweek.

=Iusuallyhavealotofmeetings________.todosometoattendusefulworkFunctionsofinfinitivesasattributeRewritethesentencesbytakingouttheunnecessaryparts.5.Weneedsomeonewhocangoandaskforadoctor.

=Weneedsomeone_____________________.6.Andersongaveherhissuggestionthatsheshouldinsistonhertask.

=Andersongaveherhissuggestion_________________.togoandaskforadoctortoinsistonhertaskFunctionsofinfinitivesasattribute

动词不定式用作定语，放在被修饰的名词后面。

1.动词不定式作定语常放在名词或不定代词后面作后置定语,表示尚未发生的动作。2.名词前有first,last,next,only等词以及最高级修饰时,其后要用动词不定式。3.抽象名词attempt,ability,chance,desire,determination,decision,plan,way或不定代词something,nothing等后面常用不定式作后置定语。4.当名词与定语之间存在动宾关系时。5.当名词与定语之间存在主谓关系时。6.当名词与定语有同位关系时。SummaryFunctionsofinfinitivesasattributeRewritethesentencesbyusinginfinitivesaspurposeadverbial.1.Inspace,astronautscollectalldirtywatersothatitcanberecycledforlateruse.

=Inspace,astronautscollectalldirtywater________________________itforlateruse.2.Astronauts’bonesandmusclescangetveryweakinspaceduetothelackofgravity,sotheyneedtoexerciseeveryday,whichwillhelpthemstayhealthy.

=Astronauts’bonesandmusclescangetveryweakinspaceduetothelackofgravity,sotheyneedtoexerciseeveryday______________________________.soasto/inordersoasto/inorderto/tokeephealthyto/torecycleFunctionsofinfinitivesaspurposeadverbialRewritethesentencesbyusinginfinitivesaspurposeadverbial.3.Astronautshavetousetapetostickeverythingdownwhileworkinginspacebecauseeverythingwouldfloatoffotherwise.

=Astronautshavetousetapetostickeverythingdownwhileworkinginspace__________________________

_________.4.Duringaspacewalk,astronautshavetomoveslowlysothattheycankeeptheirbodiesundercontrol.

=Duringaspacewalk,astronautshavetomoveslowly

___________________________________________.floatoffsoasnotto/inordernotto/nottosoasto/inorderto/tokeeptheirbodiesundercontrolFunctionsofinfinitivesaspurposeadverbialFunctionsofinfinitivesaspurposeadverbial不定式作目的状语，常译作“_____________________”。主要用来修饰_______和形容词,也可用来修饰副词。在句中,不定式可作目的状语、原因状语、结果状语、条件状语等,可表示目的、原因及结果等。1.目的状语,置于句首或句末,置于句首时常表示强调,为加强语气。(1)置于句首时只用todo/inordertodo。如用于表示否定,用inordernottodo或soasnottodo形式。(2)不定式作目的状语可转换为sothat/inorderthat或so...that...引导的目的状语从句。Summary以便……，目的是……动词2.原因状语,多见于“sb.+be+adj.+todo...”结构句中。

Iwasverysadtohearthenews.3.结果状语,多见于“too...to”;“enoughto...”;onlytodo(表示意料之外的结果的发生);so/such...asto(意为“如此……以至于……”)结构句中。Heisoldenoughtogotoschool.I’mtootiredtodowell.Herushedback,onlytofindthebookmissing.Activity4:PracticeⅠ...followedbythevehicleJadeRabbitbeingsenttothemoontostudyitssurface,...ChinalaunchedtheTiangong2spacelabintospaceandTianzhou1todockwithit.ThissignalledonestepfurtherinChina'splantoestablishaspacestationinthefuture....ofthefarsideofthemoontomakemeasurementsandobservations…

...andChinaallhaveplansto

furtherstudyandexploreplanetslikeMarsandJupiter.adverbialadverbialattributeadverbialattributeFillintheblankswiththecorrectformsoftheverbs.1.Asitisattheendofsummer,peoplethinkitistheirlastchance_______(have)funbeforegoingbacktoboringwork.2.Ithinkyouhaveeveryright___________(complain).3.________(make)friendseasily,youneedtobeverykind.4.It'snevertooold_______(learn).5.Hewentback,only_______(find)thedoorfirmlylocked.tohavetocomplainTomaketolearntofindActivity4:PracticeⅡ6.Weareverypleased_______(hear)yourwonderfulnews.7.Heistooready________(help)others.8.Thechildhasnotoys_______(play)with.9.Thereisnotime_______(lose).10.Wouldyoubesokindas_______(tell)methetime?tohelptoheartoplaytolosetotell1.她总是第一个到教室，最后一个离开的。Sheisalwaysthefirst

toarriveandthelasttoleavetheclassroom.2.孩子们，安静一下，我有件事情要宣布！Bequietplease,boysandgirls,Ihaveanannouncement

tomake.3.这只狗很勇敢，跳到水里救那个小女孩。Thedogwasbraveenoughtojumpintothewater

tosavethelittlegirl.4.有很多作业要做，我没时间出去玩了。Ihavenotime

toplayoutsidewithsomuchhomework

todo.PracticeReplacetheitalicizedpartsbyusinginfinitivesor“inorderto/soasto+do”.1.In2003YuriMalenchenkobecamethefirstperson

whogotmarriedinspace.→

In2003YuriMalenchenkobecamethefirstpersontogetmarriedinspace.2.Inspace,astronautscollectalldirtywater

sothatitcanberecycledforlateruse.→

Inspace,astronautscollectalldirtywatersoastorecycleitforlateruse.PracticeMankindhasalwaysbeencuriousabouttheuniverseandmanypeoplehave

dreamtthatonedaytheywouldflyintospace.

Mankindhasalwaysbeencuriousabouttheuniverseandmanypeoplehavethedreamtoflyintospaceoneday.4Astronauts'bonesandmusclescangetveryweakinspaceduetothelackofgravity,sotheyneedtoexerciseeveryday,whichwillheipthemstayhealthy.

Astronauts'bonesandmusclescangetveryweakinspaceduetothelackofgravity,sotheyneedtoexerciseeverydayto/inorderto/soastohelpthemstayhealthy.5Astronautshavetousetapetostickeverythingdownwhileworkinginspacebecauseeverythingwouldfloatoffotherwise.

Astronautshavetousetapetostickeverythingdownwhileworkinginspaceto/inorderto/soastokeepeverythingfromfloatingoff.6Duringaspacewalk,astronautshavetomoveslowly

sothattheycankeeptheirbodiesundercontrol.

Duringaspacewalk,astronautshavetomoveslowlyto/inorderto/soastokeeptheirbodiesundercontrol.CheckyouranswersSendingpeopletootherplanetsorevenbeyondthesolarsystemisnotaneasygoal__________(achieve).Oneoftheproblemsisthatthetripwouldtakeaverylongtime.Forexample,______(use)thecurrenttechnology,itwouldtakeovertwoyears_________(get)totheclosestplanet,Mars,andback.Althoughlightisthefastestthing_________(know)intheuniverse,itcouldtakemorethanfouryearstoreachtheneareststarsystem.Willscientistsfigureoutaway_______(store)sufficientfoodandwaterforthelongjourney?Isitpossibletotravelfasterthanlight?Nooneknowstheanswersyet.However,spacescientistsnevergiveup.Theyareexperimentingwithgrowingcropsinspacesoas_______(help)astronautsgetenoughfoodonlongerjourneysthroughspace.toachieveusingtogetknowntostoretohelpPracticeTheairport______________(complete)nextyearwill

helppromotetourisminthisarea.

(2013四川改)2.Wearehavingameetinginhalfanhour.Thedecision_________(make)atthemeetingwillinfluencethefutureofourcompany.(2012重庆)3.Volunteeringgivesyouachance_________(change)lives,includingyourown.(2013北京)4.Thestudentsarelookingforwardtohavinganopportunity_________(explore)societyofreal-lifeexperience.(2013

上海)5.Ihavealotofreadings__________(complete)beforetheendofthisterm.(2010

山东)6.Theplay______________(produce)nextmonthaimsmainlytoreflectthelocalculture.(2009安徽)7.Theability_________(express)anideaisasimportantastheideaitself.(2011湖南)tobecompletedtobemadetochange高考链接toexploretocompletetobeproducedtoexpress8.It’simportantforthefigures____________(update)

regularly.(2011北京)9.Birds’singingissometimesawarningtootherbirds______(stay)away.(2012北京)10.It’sstandardpracticeforacompanylikethisone_________(employ)asecurityofficer.(2014山东)11.________(make)iteasiertogetintouchwithus,you’dbetterkeepthiscardathand.(2016北京改)12.Anxiously,shetookthedressoutofthepackageandtriediton,only_______(find)itdidn’tfit.(2014天津改)tostaytobeupdatedtoemployTomaketofindHello,mydearfriends!Iamgreatlyhonoured________(share)theeventwithyou.Thethemeoftheactivityis___________(introduce)Chinesetraditionalculture.Duringthismonth,therewillbevariousactivitiesforyou____________(experience)therichandcolourfulChineseculture.Youwillhaveachance___________(make)paper-cuttingor____________(appreciate)Chinesearts.Therewillbesomelecturesforyou_________(attend),_______isbeneficialtoyourunderstandingaboutChina.________(learn)moreaboutChina,don’thesitate_________(contact)usandbethefirst________(sign)upfortheactivity.tosharetointroducetoexperiencetomaketoappreciate语篇演练toattendTolearnwhichtocontacttosignPresentingIntroduceZhaiZhigang'sexperienceasanastronaut,usingasmanyinfinitivesaspossible

OnSeptember27,2008,ZhaiZhigang,aChineseastronaut,climbedoutofthespacecrafttofixaChineseflagontheoutsideofthespaceship.HeisthefirstChineseastronauttomakespacewalk.PossibleversionⅠⅡⅢⅣⅤA级必备知识基础练Ⅰ.单词拼写1._______________(回收利用)thewastefromourincreasedconsumptionisbetterthanburningit.

2.Itspurposeistobuildandmaintainboneand____________(肌肉)mass,bothofwhichshrinkwithage.

3.Heisgoodathisjob.But,ontheotherhand,heseemstol______confidence.

4.Myparentslentmethemoney.O____________,Icouldn’thaveaffordedthetrip.

5.Theexercisewasdifficultandb________theabilitiesofmostoftheclass.

RecyclingmuscleacktherwiseeyondⅠⅡⅢⅣⅤ6.S____________energyisanewkindofsourceofenergywhichiscleanandsustainable.

7.Hegavehisfaceaquickrubwitha_______________(毛巾)andwentofftowork.

8.Theywereunabletomatchuphis_______________(组织)typewithanyofthepossibledonors.

9.Ifmembersofthepublicwanttousethese____________(设备),itmaycausestressontheuniversity’sresources.

olartoweltissuefacilitiesⅡⅢⅣⅤⅠⅡ.单句语法填空1._______________(current),over500studentsareenrolledonthecourse.

2.Onlywhenagricultureisfullydevelopedcanindustryhave__________(sufficiency)materialsandmarkets.

3.Shewastheonlywoman_______________(rise)tosuchahighpositioninthecompany.

4.Inhisspeech,heclearlyexpressedhisdetermination___________(achieve)hisgoal.

5.Theyhavenowanopportunity_______________(go)abroadtostudyfurther.

CurrentlysufficienttorisetoachievetogoⅡⅢⅣⅤⅠ6._______________(learn)moreaboutChina,LilyhaswatchedmanyChinesefilms.

7.Weclimbedtothetopofthemountain_______________(have)agoodviewofthewholecity.

8.Hisability_______________(get)onwellwithothersishischiefadvantage.

9.Shewastoonervous_______________(say)awordbeforethewholeclass.

10.I’mmorethandelighted_______________(know)thatyou’llgiveusalectureonenvironmentalprotectiontomorrowmorning.

Tolearntohavetogettosaytoknow

ⅡⅢⅣⅤⅠⅢ.单句写作1.学生们迫不及待地想见到三个月前返回地球的那三名宇航员。Thestudents___________________________________thethreeastronautswhoreturnedtotheearththreemonthsago.

2.研究不同的项目,然后弄清楚哪个对你来说是最好的选择。Researchdifferentprogramsandthen_________________whichoneisthebestchoiceforyou.

3.所有的孩子都值得拥有接受平等教育的机会。Allchildrendeservetohave_______________________________________________.

couldn’twaittomeetfigureouttheopportunity/chancetoreceiveequaleducation

ⅡⅢⅣⅤⅠ4.我看到雪激动得连寒冷都不在乎了。Igot_____________________________thatIwasindifferenttothecold.

5.为了提高他的英语口语,周涛在网上报了一门培训课程。_________________________________________,ZhouTaosignedupforatrainingcourseonline.soexcitedtoseethesnowInordertoimprovehisspokenEnglish

ⅠⅡⅢⅣⅤB级能力素养提升练Ⅳ.阅读理解AHowmanythingscanyouseeinthenightsky?Alot!Onaclearnightyoumightseethemoon,someplanets,andthousandsofsparklingstars.Youcanseeevenmorewithatelescope.Youmightseestarswhereyouonlysawdarkspacebefore.Youmightseethatmanystarslooklargerthanothers.Youmightseethatsomestarsthatlookwhitearereallyredorblue.Withabiggerandbiggertelescope,youcanseemoreandmoreobjectsinthesky.Andyoucanseethoseobjectsinmoreandmoredetails.ⅠⅡⅢⅣⅤButscientistsbelievetherearesomethingsintheskythatwewillneversee.Wewon’tseethemwiththebiggesttelescopeintheworld,ontheclearestnightoftheyear.That’sbecausethey’reinvisible.They’rethemysteriousdeadstarscalledblackholes.Youmightfindithardtoimaginethatstarsdie.Afterall,oursunisastar.Yearafteryearweseeitupinthesky,burningbrightly,givingusheatandlight.Thesuncertainlydoesn’tseemtobegettingoldorweak.Butstarsdoburnoutanddieafterbillionsofyears.ⅠⅡⅢⅣⅤAsastar’sgasesburn,theygiveofflightandheat.Butwhenthegasesrunout,thestarstopsburningandbeginstodie.Asthestarcools,theouterlayersofthestarpullintowardsthecenter.Thestarissquashedintoasmallerandsmallerball.Ifthestarisverysmall,thestarwillendupasacold,darkballcalledablackdwarf.Ifthestarisverybig,itkeepssquashinginwarduntilit’spackedtogethertighterthananythingintheuniverse.ⅠⅡⅢⅣⅤImagineiftheearthwerecrusheduntilitwasthesizeofatinymarble.That’showtightlythisdeadstar,ablackhole,ispacked.Whatpullsthestartowardsitscenterwithsuchpower?It’sthesameforcethatpullsyoudownwhenyoujump—theforcecalledgravity.Ablackholeissotightlypackedthatitsgravitysucksineverything—evenlight.Thelightfromablackholecannevercomebacktoyoureyes.That’swhyyouseenothingbutblackness.Sothenexttimeyoustareupatthenightsky,remember:there’smoreintheskythanthatmeetstheeyes!Scatteredinthesilentdarknessareblackholes—thegreatmysteryofspace.ⅠⅡⅢⅣⅤ【语篇解读】本文是一篇说明文。在晴朗的夜空,我们可以看见月亮、一些行星和成千上万的星星,但还有一些我们看不到的东西,它们是隐形的黑洞,文章介绍了黑洞是如何形成的。

ⅠⅡⅢⅣⅤ1.Whatmighthappenafterastardies?A.Thestarmightbecomeablackhole.B.TheEarthmightbehitbythestar.C.Theskymightbecomemuchdarker.D.Thegravitymighttotallydisappear.细节理解题。根据第四段中的“They’re

the

mysterious

dead

stars

called

black

holes.”以及第七段中的“If

the

star

is

very

small,the

star

will

end

up

as

a

cold,dark

ball”可知,恒星死亡后可能会变成一个黑洞。故选A项。√ⅠⅡⅢⅣⅤ2.Whatcausesastartodie?A.Itsgasesrunningout.B.Ithittingotherstars.C.Itgettingtoohot.D.Itslightfadingaway.细节理解题。根据第六段中的“As

a

star’s

gases

burn,they

give

off

light

and

heat.But

when

the

gases

run

out,the

star

stops

burning

and

begins

to

die.”可知,恒星的气体耗尽时开始死亡。故选A项。√ⅠⅡⅢⅣⅤ3.Whyarepeopleunabletoseelightfromablackhole?A.Mostblackholesaretoofaraway.B.Wedon’thaveapowerfulenoughtelescope.C.Blackholescantravelasfastaslight.D.Lightcannotescapeablackhole’sgravity.细节理解题。根据倒数第二段中的“A

black

hole

is

so

tightly

packed

that

its

gravity

sucks

in

everything—even

light.The

light

from

a

black

hole

can

never

come

back

to

your

eyes.That’s

why

you

see

nothing

but

blackness.”可知,人们看不到黑洞发出的光,是因为光无法逃脱黑洞的引力。故选D项。√ⅠⅡⅢⅣⅤBIfMarswerethepopularkidsinschool,Venus(金星)wouldbetheunwelcomeonesittinginthecorner,largelyignored.VenushasnearlythesamemassandsizeasEarth,butbeingclosertothesun,itgetsnearlytwiceasmuchheatfromthesun.However,insteadofhavingaclimatethatisjustawarmerversionofEarth’s,Venus’ssurfaceandatmosphereareunbearable:cloudsofsulphuricacid(硫酸)blankettheplanet,whileatgroundlevel,itishotenoughtomeltlead.Despitethis,thereisnowasignthatVenusmayharbourlife.JaneGreavesatCardiffUniversity,UK,andhercolleaguesrecentlydetected(发现)ⅠⅡⅢⅣⅤphosphine(磷化氢)inVenus’satmosphere,withonepotentialexplanationthatitistheby-productofbiology.ThatisbecausetheonlywaythisgasismadeonEarthisinlaboratoriesorbymicrobes(微生物).Thoughthisdoesn’tmeanitwasproducedbylifeonVenus,attemptstofindnon-biologicalexplanationsforitspresencehavesofarfailed.OurbestwayofconfirmingorrejectingthepossibilityoflifeonVenusistogoandhaveaproperlook.WhileMarshasbeenthefocusofinterplanetary(行星间的)explorationeffortslately,thephosphinediscoveryletspeoplelookatVenusinanewlight.AsNASAadministratorJimBridenstinetweeted,“It’stimetoprioritizeVenus.”ⅠⅡⅢⅣⅤInthemonthsandyearstocome,computersimulations(模拟)willbeusedtofurtherstudythepossiblechemistriesoftheatmosphereonVenus.Morelaboratoryexperimentswillbeconductedtotrytoidentifyotherwaysthephosphinetherecouldbeproduced.However,thereisnoguaranteethattheseeffortswillrevealthetruenatureofthissubstanceonVenus.Anewly-proposedstrategyistodirectlysampletheatmosphereandsurfaceofVenus.Bydoingso,wewouldbeabletotakedirectmeasurementsofphosphine.ⅠⅡⅢⅣⅤ【语篇解读】本文是一篇说明文。文章主要介绍了对金星的探究。ThediscoveryofphosphineinVenus’satmosphereisagreataccomplishment.Thescientificeffortsmaybejustwhatweneedtofinallyrefocusonthisneglectedworld.Possibly,thequietkidinthecornermaygetthelastlaugh.ⅠⅡⅢⅣⅤ4.WhichdescriptionaboutVenusisNOTtrue?A.Ithastheunbearablesurfaceandatmosphere.B.IthasnearlythesamemassasEarth.C.ItisalmostaslargeasEarth.D.IthasawarmerEarth-likeclimate.细节理解题。根据第二段第一句“However,instead

of

having

a

climate

that

is

just

a

warmer

version

of

Earth’s,Venus’s

surface

and

atmosphere

are

unbearable”可知火星上的气候是让人难以忍受的,故知选项D是错误的。故选D项。√ⅠⅡⅢⅣⅤ5.WhatcanthediscoveryofphosphineonVenusindicate?A.Thiskindofgasisverycommon.B.Theremightexistsignsoflife.C.Manyproductscanbemadewithit.D.Experimentswereonceconductedthere.推理判断题。根据第二段可推断,在金星上发现磷化氢暗示了那里可能存在生命的迹象。故选B项。√ⅠⅡⅢⅣⅤ6.Whatisparagraph3mainlyabout?A.Thenecessitytoanalysephosphine.B.Thepowerofcomputersimulations.C.Theimportanceofobservations.D.Theapproachestoexploringphosphine.推理判断题。根据第三段中的“In

the

months

and

years

to

come,computer

simulations

will

be

used

to

further

study

the

possible

chemistries

of

the

atmosphere

on

Venus.More

laboratory

experiments

will

be

conducted

to

try

to

identify