沪教版2023年七年级英语上册Unit 5 课时2 Grammar 同步练习

Unit5Grammar

基础篇

一、根据要求写出相应的单词或短语

1.able______________（九）2.wear____________—（过去式）

3.breath______________（v.）4.we______________—（反身代词）

5.leave____________（过去式）6.strong____________（反义词）

7.tie_____________（过去式）8.不得不__________

9.也就是说________________10.例如___________

二、单项选择。

1.一Areyougoingtohaveapicnic________

——Ihopeso.

A.everySundayB.nextSundayC.lastSundayD.onSundays

2.MichaelinaschoolinYunnanfromFebruarytoJunenextyear.

A.teachB.taughtC.willteachD.wasteaching

3.一Ithinkself-drivingcarswillcomeintoourlife

-Perhaps.

A.inafewyearsB.afewyearsagoC.forafewyearsD.afterafewyears

4.Wetheworknextweek.

A.finishB.goingtofinishC.willfinishD.willfinishing

5.Mary______herenextweek.

A.isn'tworkB.doesn'tworkingC.isn'tgoingtoworkingD.won'twork

6.Thereafootballmatchnextweekend.

A.isB.willhaveC.isgoingtobeD.isgoingtohave

7.Mybrother______hereat11a.m.tomorrow.

A.beB.isC.willD.willbe

8.Sam,______you______freethisSunday?

A.will;areB.will;beC.are;beD.do;are

9.yourmother_____________anewcomputerforyou?

A.Is;goingtobuyB.Are;goingtobuyC.Will;buysD.Will;goingtobuy

10.一WillTomgofishingwithhisfather?

—No,he.

A.can'tB.won'tC.isn'tD.doesn't

11.ThereabasketballmatchbetweenClass1andClass3tomorrow.

A.isgoingtoB.isgoingtobe

C.isgoingtohaveD.aregoingtobe

12.--FveneverseenMr.Taylorbefore.

---Don'tworry.Ihimtoyoubeforethemeeting.

A.willintroduceB.introducedC.haveintroducedD.hadintroduced

三、按要求改写句子。

1.Iwillcallyouthisevening.(改为否定句)

2.Sallywon'tvisittheGreatWalltomorrow.(改为肯定句)

3.HewillhavetimetowatchTV.(改为一般疑问句)

4WillLucygotothecinemathisweekend?(作肯定、否定回答)

5Mikewillhavehisbirthdaypartyintheclassroom.(就划线部分提问)

6.Theyaregoingtomakesnowmen.(就划线部分提问)

四、用所给动词的适当形式填空。

1.Todayisasunnyday.Wearegoing(have)apicnicthisafternoon.

2.Whenwearrive,I(walk)ontheMoon.

3.Tomoften(go)toschoolonfoot.Buttodayisrainy.He(go)toschoolbybike.

4.-Whatdoyouusuallydoatweekends?

-Iusuallygo(swim).

5.Look,thegirl(fly)akite.Lefsgoandplaywithher.

6.—What(do)youdolastSunday?

一I(pick)applesonafarm.

7.Mary(visit)hergrandparentstomorrow.

8.There(be)atalkshowonTVatninethisevening.

9.Davidusually(go)tothelibraryattheweekends.

10.1(plan)formystudynow.

五、句子翻译。

1.我们下周一离开广州。

2.你明天会去看他吗？

3.他们没打算下周去野炊。

4.汤姆下周三回来。

5.你们打算什么时候去放风筝?

6.他还没决定什么时候离开广州。

7.我想知道明天我们在哪里见面。

8.假期他们准备怎么过?

提高篇

六、语法填空

A(回归课文)

ThisisadiarykeptbyJerry1.10October,2053.

I'msohappythatrilbeoneofthefirst2.(student)totravelintospacetomorrow.

ThespaceshipwillleavetheEarthat9a.m.ItHltakeustotheMoon.Ican'twait3.(go)thereright

now.

TheMoonisabout380,000kilometresfromtheEarth,sowewillspendaboutfourdays

4.(get)there.Thereisnogravityinspace,sowe'llallbeabletotravelaround

5.thespaceship.We'llhavetotie6.(we)toourbedssothatwewon'tfloataway

inoursleep!7.gravity,ourbodiesmaygetweak,sowe'llhavetodoexerciseseveryday.

Whenwearrive,I'mgoingtowalkontheMoon.I'llhavetowear8.spacesuittohelpme

9.(breath)becausethere?snoairontheMoon.I'mgoingtotakeasmany10.

(photo)asIcan,thatistosay,ifmycamerastillworksupthere...

B

Myschoolhasmanydifferent1.(club).Ijoinedsomeofthemlastterm.Lastnight,Idreamt

abouttheschoolsFlyingClub.Ijoineditonasunnymorning.SoonIlearnttoflyintheair2.a

bird.Ienjoyed3.(fly)abovetheclouds.Itfelt4.(amaze)!ForthefirsttimeIwentup,I

5.(see)manysmallhousesandtreesbelow.Ispentmanyhours6.(fly)abovethecity.

Iliketowatchthepeopleastheywentabout7.(they)lives.

Thepeople,theroadsandthebuildingslookedsosmalltome.Itwassowonderful,8.atlast

itbecameabitdangerous.Ihitmyheadonabigtree9.(bad)andfellintoariver.Oh,myGod!

Igotverywet.IwassoafraidthatIwokeupatonce.Luckily,itwasjust10.dream.Iamsafein

fact.

七、语法选择：

Believeitornot,thedaywhenyoucangotothemooniscomingsoon.Youcangointospace___1___space

ship.It___2___aboutthreedaysfortheshuttletogofromtheearthtothemoon.Theshuttlefliesalongwaytoa

spacestation.Youcanstaythereforashortrestandthenitwill___3___youtothemoon.

Nowyoucanjumpoutoftheshuttle.Butyoumustn'ttakeoffyourspacesuit,becauseitisveryhotinthe

daytimeandverycoldatnightonthe___4___.Themoonismuchsmallerthantheearth.Thingsare___5___onthe

moonthantheyareontheearth.Youcanjumphigheverytimeyoutakeastep.Youwillfindthatitisnevertiringto

walkonthemoon.Youdon'tneedtotakeanumbrellaoraraincoatwithyou___6___thereisnorainonthemoon.

Youcanhear___7___becausethereisnoaironthemoon.Andtherearenoanimalsorotherlivingthingsthere.

Themoonmovesmore___8___thantheearth,soonedayonthemoonisaslongastwoweeksontheearthand

onenightisjustaslongastwoweeksontheearth.Whatcouldyoudoin___9___longdaysandnightsandina

silentworld?Now10aretryingtomakethebestofthemoon.Butourearthisreallyafarbetterplaceto

live,aslongaswetakegoodcareofit.

1.A.byB.underC.forD.with

2.A.spendsB.costsC.takesD.pays

3.A.joinB.carryC.countD.communicate

4.A.stationB.shuttleC.earthD.moon

5.A.lightB.heavyC.lighterD.heavier

6.A.becauseB.whenC.ifD.so

7.A.somethingB.anythingC.everythingD.nothing

8.A.slowB.fastC.slowlyD.quickly

9.A.soB.suchC.veryD.too

10.A.teachersB.scientistsC.thingsD.spaceshuttles

八、阅读理解

A

Jupiter'sMoonsandHowTheyTravel

ManymoonsofJupiter(木星)travelaroundtheplanetindifferentdirections.(方向)

Jupiteristhelargestplanetinoursolarsystem.Overtheyears,scientistshavefoundthatJupiterhasitsown

smallsolarsystem.Earthhasonemoon.Jupiterhasatleastsixteenandprobablymore.

Sincetherearesomanymoons,scientistsbegantonumberthem.Thenumerals(numbers)tellthesequence,

ororder,inwhichthemoonswerefound.Theywereslowertonamethemoons.AllofJupiter'smoonsnowhavea

nameaswellasanumber.

Thefirstfivemoonstobediscoveredareknownasthe"innermoons^^.Buttheyarenottheclosesttothe

planet.Theclosestisonly127,600kilometresawayfromJupiter.Alltheinnermoonscircletheplanetin

counter-clockwisedirection,thatis,oppositeofthehandsofaclock.

Jupiter*smiddlegroupofmoonsareatleast11,100,000kilometresfromtheplanet.Theyalsomoveina

counter-clockwisemotion(moving).Thefourfarthestmoonsareatleast20,700,000kilometreaway.Theseare

called"outermoons^^.Theycircleinaclockwisemotion.

Howmanymoremoonsdoyouthinkwillbediscovered?

1.Whatdoes“solarsystem^^inthisarticlemean?

A.银河系B.宇宙空间C.流星雨D.太阳系

2.Thingsthattravelinthesamedirectionasthehandsofaclockaresaidtobetravelingina.

A.clockwisedirectionB.counter-clockwisedirection

C.samedirectionD.differentdirection

3.Jupiter'sgroupofmoonstravelinaclockwisedirection.

A.planetsB.innerC.middleD.outer

4.Accordingtothepassage,whichofthefollowingistrue?

A.NoneofJupiter'smoonshavenames.B.MostofJupiter*smoonscircleclockwise.

C.Jupiter*sinnermoonswerediscoveredfirst.D.JupiteristhenearestplanettotheEarth.

5.HowfarawayarethemiddlegroupofmoonsfromJupiter?

A.It'snotmentioned.B.11,100,000kilometresaway.

C.127,600kilometresaway.D.20,700,000kilometresaway.

B、阅读填空

SpaceloverWangYuanishappytobeoneofthevolunteersfortheMars-500test

project（火星一500试验项目的志愿者）.1.TheyarethreeRussians,anItalianandaFrenchman.

Theywillfeelwhatit*sliketotraveltoMarswithoutleavingtheearth.2.Althoughthevolunteerswon't

leavethebuilding,theywillfeelasiftheyareontherealtriptoMars.Theywillbeseparated（隔开）fromthe

peopleoutsideforayearandahalf.3.Whatwilltheymissmostduringthe500-dayspeciallife?

CharlesfromFrancesays,“Forme,itwillbemyfamily,theSunandthefreshair.”

Themaintaskistostudy“ManandEnvironment"。Itwillcareaboutaastronauts,physical

effect（身体反应）andtheexperienceofstayingthere.4.Thatis,theywillhavetoworkbythemselves

andthenreporttotheEarth.5.Eachvolunteerispreparingforthegreattest.Andpeoplearelooking

forwardtotheresultofthetest.

A.ThentheEarthwilltellthemiftheydotherightthing.

B.For18months,theywon*tseetheSuncominguporgoingdown.

C.TheMars-500testwillbeinaspecialbuildinginMoscow.

D.Anotherfivevolunteersarealsospacelovers.

E.Everyonewillstayandworktherealone.

Unit5Grammar

基础篇

一、根据要求写出相应的单词或短语

1.able______________(〃.)2.wear___________—（过去式）

3.breath_____________(v.)4.we_____________—（反身代词）

5.leave_________—（过去式）6.strong__________—（反义词）

7.tie____________（过去式）8.不得不_________

9.也就是说_____—10.例如__________

【答案】1.ability2.wore3.breathe4.ourselves5.left6.weaktied7.haveto8.thatislO.suchas

二、单项选择。

1.一Areyougoingtohaveapicnic________

一Ihopeso.

A.everySundayB.nextSundayC.lastSundayD.onSundays

【答案】B

【解析】句意：--下星期天你要去野餐吗？一-我希望如此。

考查时间状语。A.everySunday每周日，用于一般现在时；B.nextSunday下周日，用于一般将来时；C.

lastSunday上周日，用于一般过去时；D.onSundays每逢周日，用于一般现在时；根据“Areyougoingto

haveapicnic^^句子是一般将来时，判断空格选表示将来的时间状语，故选B。

2.MichaelinaschoolinYunnanfromFebruarytoJunenextyear.

A.teachB.taughtC.willteachD.wasteaching

【答案】C

【解析】句意：Michael明年从一月到六月将要在云南一所学校教书。C.willteach一般将来时结构。Next

year表示将来的时间状语。

3.一Ithinkself-drivingcarswillcomeintoourlife.

一Perhaps.

A.inafewyearsB.afewyearsagoC.forafewyearsD.afterafewyears

【答案】A

【解析】句意;A我认为自动驾驶将会。。。要用将来时的时间状语，B.afewyearsago

几年前，过去时态C.forafewyears一段时间D.afterafewyears

几年后，表示过去某个时间之后，用过去时态。inafewyears

几年后，以现在为起点“将几年后。”故选A

4.Wetheworknextweek.

A.finishB.goingtofinishC.willfinishD.willfinishing

【答案】C

【解析】将来时的构成，由will+v或begoingto+V构成。故选C

5.Maryherenextweek.

A.isn'tworkB.doesn'tworkingC.isn'tgoingtoworkingD.won'twork

【答案】D

【解析】将来时的构成，由will+v或begoingto+V构成。C.isn9tgoingtoworkingto要用原形。故选D

6.Thereafootballmatchnextweekend.

A.isB.willhaveC.isgoingtobeD.isgoingtohave

【答案】C

【解析】thereis/are有它的将来时形式therewillbethereis/aregoingtobe将有故答案C正确。

7.Mybrother______hereat11a.m.tomorrow.

A.beB.isC.willD.willbe

【答案】D

【解析】tomorrow明天，用将来时态。

8.Sam,______you______freethisSunday?

A.will;areB.will;beC.are;beD.do;are

【答案】B

【解析】系表结构。Willbefree将有空。一般将来时的疑问句，Will+主语+谓语。。。？

9.yourmotheranewcomputerforyou?

A.Is;goingtobuyB.Are;goingtobuyC.Will;buysD.Will;goingtobuy

【答案】A

【解析】将来时的构成，由will+v或begoingto+V构成。将来时的疑问句结构：Is主语+goingto

+Vooo?

10.一WillTomgofishingwithhisfather?

一No,he.

A.can'tB.won'tC.isn'tD.doesn't

【答案】B

【解析】考查一般疑问句的肯否回答，Yes,hewill.No,hewon^.

11.ThereabasketballmatchbetweenClass1andClass3tomorrow.

A.isgoingtoB.isgoingtobeC.isgoingtohaveD.aregoingtobe

【答案】B

【解析】句意：明天1班和3班将有一场篮球比赛。考查there

be句型。由时间状语tomorrow可知句子用一般将来时。therebe句型的一般将来时结构为：Therewill

be或Thereis/aregoingtobe...。abasketballmatch是名词单数形式，需要用Thereisgoingtobe,故答案为B。

12.--I'veneverseenMr.Taylorbefore.

--Don'tworry.Ihimtoyoubeforethemeeting.

A.willintroduceB.introducedC.haveintroducedD.hadintroduced

【答案】A

【解析】句意：——以前我从来没见过Taylor先生。——不要担心，开会前我会把他介绍给你的。根据wil

1introduce一般将来时态的结构，introduced一般过去时态的结构，have

introduced现在完成时态的结构，hadintroduced过去完成时态的结构；根据Don'tworry.和beforethe

meeting.nJ知是将来时态；故选A。

三、按要求改写句子。

1.Iwillcallyouthisevening.（改为否定句）

【答案】Iwon'tcallyouthisevening

2.Sallywon'tvisittheGreatWalltomorrow.（改为肯定句）

【答案】SallywillvisittheGreatWalltomorrow.

3.HewillhavetimetowatchTV.（改为一般疑问句）

【答案】WillhewillhavetimetowatchTV?

4WillLucygotothecinemathisweekend?（作肯定、否定回答）

【答案】Yes,shewill.No,shewon't.

5Mikewillhavehisbirthdaypartyintheclassroom.（就划线部分提问）

【答案】WherewillMikehavehisbirthdayparty?

6.Theyaregoingtomakesnowmen.（就划线部分提问）

【答案】Whataretheygoingtodo?

四、用所给动词的适当形式填空。

1.Todayisasunnyday.Wearegoing（have）apicnicthisafternoon.

2.Whenwearrive,I(walk)ontheMoon.

3.Tomoften(go)toschoolonfoot.Buttodayisrainy.He(go)toschoolbybike.

4.—Whatdoyouusuallydoatweekends?

-Iusuallygo(swim).

5.Look,thegirl(fly)akite.Lefsgoandplaywithher.

6.What(do)youdolastSunday?

-I(pick)applesonafarm.

7.Mary(visit)hergrandparentstomorrow.

8.There(be)atalkshowonTVatninethisevening.

9.Davidusually(go)tothelibraryattheweekends.

10.1(plan)formystudynow.

【答案】1.tohave2.willwalk3.goeswent4.swimming5.isflying6.didpicked

7.willvisit.isgoingtovisit8.willbe/isgoingtobe9.goes10.amplanning

五、句子翻译。

1.我们下周一离开广州。

【答案】WewillleaveGuangzhounextMonday.

2.你明天会去看他吗？

【答案】Willyouseehimtomorrow?

3.他们没打算下周去野炊。

【答案】Theyaren'tgoingtohaveapicnicnextweek.

4.汤姆下周三回来。

【答案】TomwillbebacknextWednesday..

5.你们打算什么时候去放风筝？

【答案】Whenareyougoingtoflyakite?

6.他还没决定什么时候离开广州。

【答案】Hehasn'tdecidedwhenhewillleaveGuangzhou.

7.我想知道明天我们在哪里见面。

【答案】Iwonderwherewewillmeettomorrow.

8.假期他们准备怎么过？

【答案】WhatareyougoingtodonextSaturday?

提高篇

六、语法填空

A(回归课文)

ThisisadiarykeptbyJerry1.10October,2053.

I'msohappythatI'llbeoneofthefirst2.(student)totravelintospacetomorrow.

ThespaceshipwillleavetheEarthat9a.m.It'lltakeustotheMoon.Ican'twait3.(go)thereright

now.

TheMoonisabout380,000kilometresfromtheEarth,sowewillspendaboutfourdays

4.(get)there.Thereisnogravityinspace,sowe'llallbeabletotravelaround

5.thespaceship.We911havetotie6.(we)toourbedssothatwewon'tfloataway

inoursleep!7.gravity,ourbodiesmaygetweak,sowe'llhavetodoexerciseseveryday.

Whenwearrive,I'mgoingtowalkontheMoon.I'llhavetowear8.spacesuittohelpme

9.(breath)becausethere'snoairontheMoon.I'mgoingtotakeasmany10.

(photo)asIcan,thatistosay,ifmycamerastillworksupthere...

【答案】l.on2.students3.togo4.getting5.in6.ourselves7.without8.a9.brealthelO.photos

B

Myschoolhasmanydifferent1.(club).Ijoinedsomeofthemlastterm.Lastnight,Idreamt

abouttheschoolsFlyingClub.Ijoineditonasunnymorning.SoonIlearnttoflyintheair2.a

bird.Ienjoyed3.(fly)abovetheclouds.Itfelt4.(amaze)!ForthefirsttimeIwentup,I

5.(see)manysmallhousesandtreesbelow.Ispentmanyhours6.(fly)abovethecity.

Iliketowatchthepeopleastheywentabout7.(they)lives.

Thepeople,theroadsandthebuildingslookedsosmalltome.Itwassowonderful,8.atlast

itbecameabitdangerous.Ihitmyheadonabigtree9.(bad)andfellintoariver.Oh,myGod!

Igotverywet.IwassoafraidthatIwokeupatonce.Luckily,itwasjust10.dream.Iamsafein

fact.

【答案】1.clubs2.like3.flying4.amazing5.saw6.flying7.their8.but9.badly10.a

七、语法选择：

Believeitornot,thedaywhenyoucangotothemooniscomingsoon.Youcangointospace___1___space

ship.It___2___aboutthreedaysfortheshuttletogofromtheearthtothemoon.Theshuttlefliesalongwaytoa

spacestation.Youcanstaythereforashortrestandthenitwill___3___youtothemoon.

Nowyoucanjumpoutoftheshuttle.Butyoumustn'ttakeoffyourspacesuit,becauseitisveryhotinthe

daytimeandverycoldatnightonthe___4___.Themoonismuchsmallerthantheearth.Thingsare___5___onthe

moonthantheyareontheearth.Youcanjumphigheverytimeyoutakeastep.Youwillfindthatitisnevertiringto

walkonthemoon.Youdon'tneedtotakeanumbrellaoraraincoatwithyou___6___thereisnorainonthemoon.

Youcanhear___7___becausethereisnoaironthemoon.Andtherearenoanimalsorotherlivingthingsthere.

Themoonmovesmore___8___thantheearth,soonedayonthemoonisaslongastwoweeksontheearthand

onenightisjustaslongastwoweeksontheearth.Whatcouldyoudoin___9___longdaysandnightsandina

silentworld?Now10aretryingtomakethebestofthemoon.Butourearthisreallyafarbetterplaceto

live,aslongaswetakegoodcareofit.

1.A.byB.underC.forD.with

2.A.spendsB.costsC.takesD.pays

3.A.joinB.carryC.countD.communicate

4.A.stationB.shuttleC.earthD.moon

5.A.lightB.heavyC.lighterD.heavier

6.A.becauseB.whenC.ifD.so

7.A.somethingB.anythingC.everythingD.nothing

8.A.slowB.fastC.slowlyD.quickly

9.A.soB.suchC.veryD.too

10.A.teachersB.scientistsC.thingsD.spaceshuttles

【答案】ACBDCADCBB

【解析】本文介绍了人们不久将可以去月球上旅行，并介绍乘坐的交通工具，需要的时间以及月球上的

时间与地球上的差异。

1.句意：你可以乘坐太空船进入太空。

by通过；under在下面；for为了；with和一起。by+交通工具，表示“乘坐...”，故选A。

2.句意：太空船从地球到月球大约需要三天的时间。

spends花费；costs花费；takes需要；pays支付。Ittakessometimeforsbtodo

sth表示“某人做某事需要一些时间”，故选C。

3.句意：你可以在那里休息一会儿，然后它会带你去月球。

join力口入；carry携带；count数数；communicate交流。carrysbto表示“把某人带到...”，故选B。

4.句意：但是你不能脱下你的太空服，因为在月球上白天很热，晚上很冷。

station车站；shuttle航天飞机；earth地球；moon月球。根据前文的“Youcanstaythereforashortrestandthen

itwill…youtothemoon.”可知，此处表示在月球上，故选D。

5.句意：月球上的东西比地球上的要轻。

light轻的；heavy重的；lighter更轻的；heavier更重的。根据后文的“Youcanjumphigheverytimeyoutakea

step."可知，你在月球上每走一步，都跳很高，因此表示在月球上，东西更轻，根据“than”可知，此处用

比较级，故选C。

6.句意：你不需要带雨伞或雨衣，因为月球上没有雨。

because因为；when何时；if如果；so所以。结合句意，前一句表示你不需要带雨伞或雨衣，后一句表示月

球上没有雨，前后表示因果关系，后一句是前一句的原因，因此用连词because,故选A。

7.句意：因为月球上没有空气，你什么也听不到。

something某事；anything任何事；everything一切；nothing没什么。根据"becausethereisnoaironthe

moon.”可知，因为月球上没有空气，声音无法传播，所以你听不到声音，故选D。

8.句意：月球比地球运行得慢，所以月球上的一天相当于地球上的两个星期，而一个晚上也相当于地球

上的两个星期。

slow慢的，是形容词；fast快的，是形容词和副词；slowly慢地，是副词；quickly快地，是副词。根据“so

onedayonthemoonisaslongastwoweeksonthe

earth”可知，月球上一天相当于地球上的两周，因此月球运行得慢，修饰动词move,用副词，故选C。

9.句意：在这漫长的白天和黑夜里，在这寂静的世界里，你能做些什么呢？

so如此，是副词；such这样的，是形容词；very非常，是副词；too太，是副词。修饰名词daysand

nights,用形容词，故选B。

10.句意：现在学科家正在努力充分利用地球。

teachers教师；scientists科学家；things事情；spaceshuttles太空船。根据"aretryingtomakethebestofthe

moon.”可知，要努力充分利用月球的人，应是科学家，故选B。

八、阅读理解

A

Jupiter'sMoonsandHowTheyTravel

ManymoonsofJupiter（木星）travelaroundtheplanetindifferentdirections.（方向）

Jupiteristhelargestplanetinoursolarsystem.Overtheyears,scientistshavefoundthatJupiterhasitsown

smallsolarsystem.Earthhasonemoon.Jupiterhasatleastsixteenandprobablymore.

Sincetherearesomanymoons,scientistsbegantonumberthem.Thenumerals(numbers)tellthesequence,

ororder,inwhichthemoonswerefound.Theywereslowertonamethemoons.AllofJupitefsmoonsnowhavea

nameaswellasanumber.

Thefirstfivemoonstobediscoveredareknownasthe“innermoons”.Buttheyarenottheclosesttothe

planet.Theclosestisonly127,600kilometresawayfromJupiter.Alltheinnermoonscircletheplanetin

counter-clockwisedirection,thatis,oppositeofthehandsofaclock.

Jupitefsmiddlegroupofmoonsareatleast11,100,000kilometresfromtheplanet.Theyalsomoveina

counter-clockwisemotion(moving).Thefourfarthestmoonsareatleast20,700,000kilometreaway.Theseare

called"outermoons^^.Theycircleinaclockwisemotion.

Howmanymoremoonsdoyouthinkwillbediscovered?

1.Whatdoes"solarsystem^^inthisarticlemean?

A.银河系B.宇宙空间