公共英語五級閱讀題模擬試題

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SectionⅢReadingComprehension

50minutes

PartA：ReadthefollowingtextsandanswerthequestionswhichaccompanythembychoosingA，B，CorD.MarkyouranswersonANSWERSHEET1.

Text1

GenetherapyandgenebaseddrugsaretwowayswecouldbenefitfromOurgrowingmasteryofgeneticscience.

Buttherewillbeothersaswell.Hereisoneoftheremarkabletherapiesonthecuttingedgeofgeneticresearchthatcouldmaketheirwayintomainstreammedicineinthecomingyears.

WhileitStruethatjustabouteverycellinthebodyhastheinstructionstomakeacompletehuman，mostofthoseinstructionsareinactivated，andwithgoodreason：thelastthingyouwantforyourbraincellsistostartchurningoutstomachacidoryournosetoturnintoakidney.Theonlytimecellstrulyhavethepotentialtoturnintoanyanallbodypartsisveryearlyinapregnancy.whenso-calledstemcellshaventbeguntospecialize.

Yetthisuntappedpotentialcouldbeaterrificboontomedicine.Mostdiseasesinvolvethedeathofhealthycells-braincellsinAlzheimers，cardiaccellsinheartdisease，pancreaticcellsindiabetes，tonameafew;ifdoctorscouldisolatestemcells，thendirecttheirgrowth，theymightbeabletofurnishpatientswithhealthyreplacementtissue.

Itwasincrediblydifficult，butlastfallscientistsattheUniversityofWisconsinmanagedtoisolatestemcellsandgetthemtogrowintoneural，gut，muscleandbonecells.Theprocessstillcantbecontrolled，andmayhaveunforeseenlimitations;butifeffortstounderstandandmasterstemcelldevelopmentprovesuccessful，doctorswillhaveatherapeutictoolofincrediblepower.

Thesanleappliestocloning，whichisreallyjusttheothersideofthecoin.Truecloning，asfirstshownwiththesheepDollytwoyearsago，involvestakingadevelopedcelandreactivatingthegenomewithin，resettingitsdevelopmentalinstructionstoapristinestate.Oncethathappens，therejuvenatedcellcandevelopintoafullfiedgedanimal，geneticallyidenticaltoitsparent.

Foragriculture.inwhichpurelyphysicalcharacteristicslikemilkproductioninacoworlowfatinahoghaverealmarketvalue，biologicalcarboncopiescouldbecomeroutinewithinafewyears.ThispastyearscientistshavedoneformiceandcowswhatIanWilmutdidforDolly，andothercreaturesareboundtojointheclonedmenagerieinthecomingyear.

Humancloning，ontheotherhand，maybetechnicallyfeasiblebutlegallyandemotionallymoredifficult.

Still，onedayitwillhappen.Theabilitytoresetbodycellstoapristine，undevelopedstatecouldgivedoctorsexact：

lythesameadvantagestheywouldgetfromstemcells：thepotentialtomakehealthybodytissuesofallsorts，and.

thustocuredisease.Thatcouldprovetobeatrue"miraclecure'.

51.Thewriterholdsthatthepotentialtomakehealthybodytissueswill_____.

[A]aggravatemoralissuesofhumancloning

[B]bringgreatbenefitstohumanbeings

[C]helpscientistsdecodebodyinstructions

[D]involveemployingsurgicalinstruments

52.Theword"rejuvenated'Para.5mostprobablymeans_____.

[A]modified

[B]recoliccted

[C]classified

[D]reactivated

53.TheresearchattheUniversityofWisconsinismentionedtoshow_____.

[A]theisolationofstemcells

[B]theeffectsofgenetherapies

[C]theadvantagesofhumancloning

[D]thelimitationsoftissuereplacepmnts

54.Whichofthefollowingistrueaccordingtothetext?

[A]Theprincipleofgenetherapyisapplicabletothatofcloning.

[B]Theisolationofstemceilsistoodifficulttobefeasible.

[C]Itisreasonableforallbodyinstructionstobeactivated.

[D]Clonedanimalswilleventuallytakecontroloftheworld.

55.Towardsthegeneticresearch，theauthorsattitudecanbestbesaidtobethatof_____.

[A]frustration

[B]indifference

[C]amazement

[D]opposition

SectionⅢReadingComprehension共計(jì)35分。權(quán)重35%

PartA每題1分。共計(jì)l5分

Text1

短文賞析

基因治療和以基由于根基的藥物是我們從遺傳科學(xué)中獲得利益的兩種方式。在未來幾年內(nèi)，這些基因療法會進(jìn)展成為主流醫(yī)學(xué)。假設(shè)醫(yī)生利用基因?qū)W識，分開干細(xì)胞，然后培育這些細(xì)胞，他們就可能為病人供給健康的移植組織。這種技術(shù)同樣也有助于克隆技術(shù)的進(jìn)展，以后越來越多的動植物將會被克隆，甚至人本身。擯棄道德法律的因素，利用基因克隆培養(yǎng)出來的人的各種健康器官，一些病將會被更好的治療。

答案及解析

51.B文章開宗明義，在第一段陳述到，假設(shè)我們掌管了基因科學(xué)，將會對人類有極大的好處。此外第三段的第一句"Yetthisun?tappedpotentialcouldbeaterrificboontomedicine'，意為"然而這種沒被開發(fā)的潛能對醫(yī)學(xué)有極大的好處'，在全文的結(jié)果一句又響應(yīng)了這一觀點(diǎn)。故應(yīng)選B。

52.D此詞出處在第五段，"rejuvenated'和前一句的"reactivating'構(gòu)成一種近義的重復(fù)。故應(yīng)選D。

53.A由第四段"theUniversityofWisconsinmanagedtoisolatestemcells'可知，雖然研究很困難，但這所大學(xué)還是在去年秋天設(shè)法分裂了干細(xì)