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D:
from
E:
on
答案:
D
(2)、
of
A
(3)、
of
under
accept
B
(4)、
E
(5)、
C
7、Modernzoosareverydifferentfromzoosthatwerebuiltfiftyyearsago.Atthattime,zooswereplaces1peoplecouldgotoseeanimalsfrommanypartsoftheworld.Theanimalslivedincagesthatweremade2concretewithironbars,cagesthatwereeasytokeepclean.
Unfortunatelyfortheanimals,thecagesweresmallandimpossibletohidein.Thezooenvironmentwasanythingbutnatural.3thezookeeperstookgoodcareoftheanimalsandfedthemwell,manyoftheanimalsdidnotthrive;
theybehavedinstrangeways,andtheyoftenbecameill.
Inmodernzoos,peoplecanseeanimalsinmorenaturalhabitats.Theanimalsaregivenmore4inlargeareassothattheycanlivemorecomfortablyastheywouldinnature.Eventheappearanceofzooshaschanged.Treesandgrassgrowinthecages,andstreamsofwaterflow5theareasthatanimalslivein.
Although
where
over
freedom
10、Theworldisnotonlyhungry;
itisalsothirstyforwater.Thismayseemstrangetoyou,sincenearly75%oftheearth'
ssurfaceiscoveredwithwater.Butabout97%ofthishugeamountisseawater,1saltwater.Mancanonlydrinkandusetheother3%ofthefreshwaterthatcomesfromrivers,lakes,underground,andother2.
Andwecan'
tevenuseallofthat,becausesomeofitisintheformoficebergsandglaciers.Evenworse,someofithasbeenpolluted.
However,asthingsstandtoday,thissmallamountoffreshwater,whichisconstantlybeingreplacedbyrainfall,isstillenoughforus.Butourneed3waterisincreasingrapidly-almostdaybyday.Weallhavetolearnhowtostopwastingourpreviouswater.Oneofthefirststepsweshould4istodevelopwaysofreusingit.
Experimentshavealreadybeendoneinthis5,butonlyonasmallscale.Thesystemsthathavebeenworkedoutresemblethoseusedinspacecraft.
take
or
sources
for
case
11、Mancan'
tgoonincreasinghisnumberatthepresentrate.Inthenext30yearsmanwillfaceaperiodofcrisis.1expertsbelievethattherewillbeawidespreadfoodshortage.Otherexpertsthinkthisistoopessimistic(悲观的),andmancanpreventthings2worsethantheyarenow.
Onethingthatmancandoistolimitthenumberofbabiesborn.Theneedforthisisobvious,3itisnoteasytoachieve.Peoplehavetobepersuadedtolimittheirfamilies.Inthecountriesofthepopulationexplosion,manypeoplelikebigfamilies.Theparentsthinkthatthis4abiggerincomeforthefamilyandensurestherewillbesomeoneinthefamilywhowilllookaftertheminoldage.
Severalgovernmentshave5birthcontrolpoliciesinrecentyears.AmongthemareJapan,China.IndiaandEgypt.Insomecasestheresultshavenotbeensuccessful.Japanhasbeenanexception.Peoplewereencouragedtolimittheirfamiliesinthe1950'
s,whichhaseffectivelyreducedthebirthrateinJapan.
Fromgetting
Some
But
Adopted
Brings
fromgetting
some
but
adopted
brings
13、Glassesprotectpeople'
seyesfrombrightlight.Microscopesmaketinythingslarger__1__wecanexaminethem.Telescopesmakeobjectsthatarefarawayappear__2__closertous.Howeverinrecentyearsplasticshavereplacedglass__3__conditionswhereglassmightbeeasilybrokentherearenewusestobedevelopedforglassthatwereneverimaginedinthe__4__.Perhapsthegreatest__5__ofglassisthatitsconstituent(构成的)partsareinexpensiveandcanbefoundallovertheworld.
much
sothat
advantage
past
14、Onceuponatimeapoorfarmertakingasackofwheattothemilldidnotknow__1__todowhenitslippedfromhishorseandfell__2__theroad.Thesackwas__3__heavyforhimtolift,andhisonlyhopewasthatpresentlysomeonewouldcomeridingbyandlendahand.
Itwasnotlong__4__ariderappeared,butthefarmer'
sheartsankwhenherecognizedhim,foritwasthegreatmanwholivedinacastlenearby.Thefarmerwouldhavedaredtoask__5__farmertohelp,oranypoormanwhomightcomealongtheroad,buthecouldnotbegafavorofsogreataman.
another
what
too
onto
before
15、LastSaturday,TonywenttoseeBenny.Buthedidn'
tknow___1___Bennylived.Ontheway,hestoppedinfrontofayellowhouse,andaskedanoldwomanthe___2___toBenny'
shouse.“Hishouseisnotfarfrommyhouse,”saidthewoman.“It'
sbehindthetrees.Butyoucan'
tgetthereeasily.Youcangotherebybus.It'
ll___3___youhourstogetthere___4___foot.”“What'
swrongwithher?
”Tonythought.“IcanseeBenny'
shousefromherenow.It'
sbehindthetrees.”
ThenTonywalkedtotheothersideofthetrees.Hefoundtheoldwomanwasright.Therewasariverinfrontofhim,andhecouldn'
tseeaboat.Thehousewasontheothersideofthe___5___.
way
river
18、Everyonehashobbies.Ahobbycanbealmostanythingapersonlikestodoinhissparetime.Peoplewhotakeuphobbiesarehobbyists.Theypaintpictures,singpopsongs,___1___musicinstrumentsandcollectstampsorotherthings.Theygrowflowers,___2___fishingandhunting.Theyclimbmountains,swim,skateandplaygames.
Peopletodayhave___3___timethaneverforhobbies.Inearlytimes,peoplewere___4___busymakingalivingtohavehobbies.Nowadaysmachineshavetakentheplaceofmanyworkers.Morepeopleretireatanearlierage.Theyhavehobbies___5___theseactivitiesofferthemenjoyment,friendship,knowledge,andrelaxation.
because
more
play
go
19、Trafficaccidentskilledmorethan104,000peopleinChinalastyear.Chinesecitieshavemorecarsthanbefore.Everydaymanypeopleare___1___whiletheycrosstheroad.Mostof___2___areoldpeopleandchildren.Oldpeopleareoftenkilledbecausetheyusuallycan'
tseeclearlyorhearverywell.___3___arekilledbecausetheyarecareless.
Acar,truckorbuscan'
tstopveryquicklyifitisgoingveryfast.Thefasteracaristraveling,thelongerittakestostop.Butpeoplewalkinginthestreetdonotalwaysunderstandthis.It'
s___4___forpeopletoknowhowfastacaristraveling.
Thenewtrafficlawswereputintouse___5___May1st,2004.Thenewtrafficlawswillmakethestreetssaferforwalkinganddriving.
killed
children
difficult
them
20、Waterisveryimportanttolivingthings.Withoutwatertherecanbe___1___lifeonearth.Allanimalsandplantsneedwater.Manneedwater,too.Weneedwatertodrink,tocookourfoodandtoclean___2___.
Water___3___almosteverywhere.Eveninthedriestpartofthewouldthereissomewaterintheair.Youcannotseeitorfeelitwhenitispartoftheair.Thewater___4___seasandriversisaliquid.Thewaterintheairisnotaliquidbutagas.
Cloudsaremade