专业八级54篇改错练习与答案解析Word下载.docx

专业八级54篇改错练习与答案解析Word下载.docx

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Thereportindicatesthat5.6millioninfantdeathsand2,000,000maternalDeathscouldbepreventedthisyearifwomenchosetohavetheirschildren____3

withinthesafestyearswithadequateintervalsamongbirthsandlimitedtheir____4

familiestomoderatesize.

Thisamountstoabouthalfofthe9.8millioninfantand370.000maternaldeathsindevelopingcountries,excludedChina,estimatedforthisyearby____5

theUnitedNation’sChildren’sFundandtheUSCentersforDiseaseControlrespectably.Chinawasexcludedbecauseveryfewbirthsoccurinthehighriskcategories.____6

Thereportsaysthatevidencesfromaroundtheworldshowstheriskof____7

maternalorinfantillanddeathisthehighestinfourspecifictypesof____8

pregnancy;

pregnanciesbeforethemotheris18yearold;

thoseafterthe____9

motheris35yearsold;

pregnanciesafterfourbirths;

andthoselesserthantwoyearsapart.____10

第二期

'

Home,sweethome"

isaphrasethatexpressanessentialattitudeintheUnitedStates.Whethertherealityoflifeinthefamilyhouseissweetornosweet,thecherishedidealofhome_____1

hasgreatimportanceformanypeople.

ThisidealisavitalpartoftheAmericandream.Thisdream,dramatizedinthehistoryofnineteenthcenturyEuropeansettlersofAmericanWest,wastofindapieceofplace,buildahouse_____2

forone'

sfamily,andstartedafarm.Thesesmallhouseholdswere_____3

portraitsofindependence:

theentirefamily-mother,father,children,evengrandparents-liveinasmallhouseandworkingtogetherto___4

supporteachother.Anyoneunderstoodthelife-and-deathimportance_____5

offamilycooperationandhardwork.AlthoughmostpeopleintheUnitedStatesnolongerliveonfarms,buttheidealofhomeownership_____6

isjustasstronginthetwentiethcenturyasitwasinthenineteenth.

WhenU.SsoldierscamehomebeforeWorldWarⅡ,forexample,_____7

theydreamedofbuyinghousesandstartingfamilies.Buttherewas_____8

atremendousboominhomebuilding.Thenewhouses,typicallyinthesuburbs,wereoftensmallandmoreorlessidentical,butitsatisfied_____9

adeepneed.Manyregardedthesingle-familyhousethebasisoftheirwayoflife._____10

第三期

Weliveinasocietywhichthereisalotoftalkaboutscience,butIwouldsay_____1

thattherearenot5percentofthepeoplewhoareequippedwithschool,includingcollege,tounderstandscientificreasoning.Wearemoreignorantofscienceaspeople_____2

withcomparableeducationinWesternEurope.Therearealotofkidswhoknoweverythingaboutcomputers—howtobuildthem,howtotakethemapart,andhowtowriteprogramsforgames.Soifyouask_____3

themtoexplainabouttherinciplesofphysicsthathavegoneintocreatingthe_____4

computer,youdon’thavefaintestidea._____5

Thefailuretounderstandscienceleadstosuchthingsliketheneglectofhuman_____6

creativepower.Italsotakesrisetoblurringofthedistinctionbetweenscienceand_____7

technology.Lotsofpeopledon’tdifferbetweenthetwo.Scienceistheproductionof_____8

newknowledgethatcanbeappliedornot,andtechnologyistheapplicationofknowledgetotheproductionofsomeproducts,machineryorthelike.Thetwoarereallydifferent,andpeoplewhohavethefacultyforoneveryseldomhaveafacultyfortheothers._____9

Scienceinitselfisharmless,moreorless.Butassoonasitcanprovidetechnology,it’snotnecessarilyharmful.Nosocietyhasyetearnedtoforecasttheconsequencesofnewtechnology,whichcanbeenormous._____10

第四期

Whatisablackhole?

Well,itisdifficulttoanswerthequestion,asthetermswewouldnormallyusetodescribeascientificphenomenon__1

areadequatehere.Astronomersandscientiststhinkthatablackholeis__2

aregionofspacewhichmatterhasfallenandfromwhichnothingcan__3

escape—notevenlight.Butwecan’tseeablackhole.Ablackhole__4

exertsastronggravitationalpullandyetithasnomatter.Itisonlyspace—orthuswethink.Howcanthishappen?

__5

Thetheoryisthatsomestarsexplodewhentheirdensityincreasestoaparticularpoint;

they“collapse”andsometimesasupernovaoccurs.

Thecollapseofastarmayproducea“WhiteDwarf”ofa“neutronstar”—astarwhichmatterissodensethatifcontinuallyshrinksbytheforceof__6

itsowngravity.Butifthestarisverylarge,thisprocessofshrinkingmaybesointensethatablackholeresultsin.Imaginetheearthreducedtothe__7

sizeofamarble,butstillhavingthesamemassesandastronger__8

gravitationalpull,andyouhavesomeideasofth