快速導(dǎo)航
學(xué)歷類
職業(yè)資格
公務(wù)員
醫(yī)衛(wèi)類
建筑工程
外語類
外貿(mào)類
計算機(jī)類
財會類
技能鑒定
試題分類：
基礎(chǔ)理論與知識
練習(xí)次數(shù)：0次
試題分類：
初級(口語)
練習(xí)次數(shù)：0次
試題分類：
口語
練習(xí)次數(shù)：0次
試題分類：
口語
練習(xí)次數(shù)：0次
試題分類：
口語
練習(xí)次數(shù)：0次
試題分類：
初級(口語)
練習(xí)次數(shù)：0次
試題分類：
初級(口語)
練習(xí)次數(shù)：0次
newweapontofightcancer
1.Britishscientistsarepreparingtolaunchtrialsofaradicalnewwaytofightcancer,whichkillstumoursbyinfectingthemwithviruseslikethecommoncold.
2.Ifsuccessful,virustherapycouldeventuallyformathirdpillaralongsideradiotherapyandchemotherapyinthestandardarsenalagainstcancer,whileavoidingsomeofthedebilitatingside-effects.
3.LeonardSeymour,aprofessorofgenetherapyatOxfordUniversity,whohasbeenworkingonthevirustherapywithcolleaguesinLondonandtheUS,willleadthetrialslaterthisyear.CancerResearchUKsaidyesterdaythatitwasexcitedbythepotentialofProfSeymour’spioneeringtechniques.
4.Oneofthecountry’sleadinggeneticists,ProfSeymourhasbeenworkingwithvirusesthatkillcancercellsdirectly,whileavoidingharmtohealthytissue."Inprinciple,you’vegotsomethingwhichcouldbemanytimesmoreeffectivethanregularchemotherapy,"hesaid.
5.Cancer-killingvirusesexploitthefactthatcancercellssuppressthebody’slocalimmunesystem."Ifacancerdoesn’tdothat,theimmunesystemwipesitout.Ifyoucangetavirusintoatumour,virusesfindthemaverygoodplacetobebecausethere’snoimmunesystemtostopthemreplicating.Youcanregarditasthecancer’sAchilles’heel."
6.Onlyasmallamountofthevirusneedstogettothecancer."Theyreplicate,yougetamillioncopiesineachcellandthecellburstsandtheyinfectthetumourcellsadjacentandrepeattheprocess,"saidProfSeymour.
7.Preliminaryresearchonmiceshowsthatthevirusesworkwellontumoursresistanttostandardcancerdrugs."It’saninterestingpossibilitythattheymayhaveanadvantageinkillingdrug-resistanttumours,whichcouldbequitedifferenttoanythingwe’vehadbefore."
8.Researchershaveknownforsometimethatvirusescankilltumourcellsandsomeaspectsoftheworkhavealreadybeenpublishedinscientificjournals.Americanscientistshavepreviouslyinjectedvirusesdirectlyintotumoursbutthistechniquewillnotworkifthecancerisinaccessibleorhasspreadthroughoutthebody.
9.ProfSeymour’sinnovativesolutionistomaskthevirusfromthebody’simmunesystem,effectivelyallowingthevirusestodowhatchemotherapydrugsdo-spreadthroughthebloodandreachtumourswherevertheyare.Thebighurdlehasalwaysbeentofindawaytodelivervirusestotumoursviathebloodstreamwithoutthebody’simmunesystemdestroyingthemontheway.
10."Whatwe’vedoneismakechemicalmodificationstothevirustoputapolymercoataroundit-it’sastealthviruswhenyouinjectit,"hesaid.
11.Afterthestealthvirusinfectsthetumour,itreplicates,butthecopiesdonothavethechemicalmodifications.Iftheyescapefromthetumour,thecopieswillbequicklyrecognisedandmoppedupbythebody’simmunesystem.
12.Thetherapywouldbeespeciallyusefulforsecondarycancers,calledmetastases,whichsometimesspreadaroundthebodyafterthefirsttumourappears."There’sanawfulstatisticofpatientsinthewest...withmalignantcancers;75%ofthemgoontodiefrommetastases,"saidProfSeymour.
13.Twovirusesarelikelytobeexaminedinthefirstclinicaltrials:adenovirus,whichnormallycausesacold-likeillness,andvaccinia,whichcausescowpoxandisalsousedinthevaccineagainstsmallpox.Forsafetyreasons,bothwillbedisabledtomakethemlesspathogenicinthetrial,butProfSeymoursaidheeventuallyhopestousenaturalviruses.
14.Thefirsttrialswilluseuncoatedadenovirusandvacciniaandwillbedeliveredlocallytolivertumours,inordertoestablishwhetherthetreatmentissafeinhumansandwhatdoseofviruswillbeneeded.Severalmoreyearsoftrialswillbeneeded,eventuallyalsoonthepolymer-coatedviruses,beforethetherapycanbeconsideredforuseintheNHS.Thoughtheapproachwillbeexaminedatfirstforcancersthatdonotrespondtoconventionaltreatments,ProfSeymourhopesthatonedayitmightbeappliedtoallcancers.
Questions1-6
Dothefollowingstatementsagreewiththeinformationgiveninthereadingpassage?Forquestions1-6write
TRUEifthestatementagreeswiththeinformation
FALSEifthestatementcontradictstheinformation
NOTGIVENifthereisnoinformationonthisinthepassage
1.Virustherapy,ifsuccessful,hasanadvantageineliminatingside-effects.
2.CancerResearchUKisquitehopefulaboutProfessorSeymour’sworkonthevirustherapy.
3.Viruscankillcancercellsandstopthemfromgrowingagain.
4.Cancer’sAchilles’heelreferstothefactthatvirusmaystaysafelyinatumorandreplicate.
5.Toinfectthecancercells,agooddealofvirusesshouldbeinjectedintothetumor.
6.Researchesonanimalsindicatethatviruscouldbeusedasanewwaytotreatdrug-resistanttumors.
Question7-9
Basedonthereadingpassage,choosetheappropriateletterfromA-Dforeachanswer.
7.Informationaboutresearchesonviruseskillingtumorcellscanbefound
(A)onTV
(B)inmagazines
(C)oninternet
(D)innewspapers
8.Totreattumorsspreadingoutinbody,researcherstryto
(A)changethebody’immunesystem
(B)injectchemotherapydrugsintobloodstream.
(C)increasetheamountofinjection
(D)disguisethevirusesonthewaytotumors.
9.Whenthechemicalmodifiedvirusintumorreplicates,thecopies
(A)willsoonescapefromthetumorandspreadout.
(B)willbewipedoutbythebody’simmunesystem.
(C)willbeimmediatelyrecognizedbytheresearchers.
(D)willeventuallystopthetumorfromspreadingout.
Questions10-13
Completethesentencesbelow.Chooseyouranswersfromthelistofwords.Youcanonlyuseeachwordonce.
NBTherearemorewordsinthelistthanspacessoyouwillnotusethemall.
Inthefirstclinicaltrials,scientistswilltryto……10……adenovirusandvaccinia,soboththeviruseswillbelesspathogenicthanthe……11…….Theseuncoatedviruseswillbeapplieddirectlytocertainareastoconfirmsafetyonhumanbeingsandtheright……12……needed.Theexperimentswillfirstlybe……13……tothetreatmentofcertaincancers
試題分類：
閱讀
練習(xí)次數(shù)：11次
試題分類：
口語
練習(xí)次數(shù)：1次
試題分類：
外貿(mào)跟單基礎(chǔ)理論
練習(xí)次數(shù)：79次
主站蜘蛛池模板：
狠狠躁夜夜躁人人躁婷婷|
成熟人妻换xxxx|
国产情侣久久久久aⅴ免费|
午夜婷婷精品午夜无码a片影院|
一二三四区无产乱码1000集|
亚洲色欲综合一区二区三区|
浮妇高潮喷白浆视频|
中文字幕人妻无码视频|
亚洲人成电影在线天堂色|
国产精品992tv在线观看|
亚洲男人天堂|
在线观看高h无码黄动漫|
国产精品亚洲综合色区韩国|
国产成人精品一区二区不卡|
无码中文字幕人妻在线一区二区三区|
丰满人妻妇伦又伦精品国产|
久久五月丁香合缴情网|
国产av一二三无码影片|
看国产一毛片在线看手机看|
色婷婷色综合激情国产日韩|
久久婷婷五月综合国产尤物app|
中文字幕亚洲无线码在线一区|
一夲道无码人妻精品一区二区|
亚洲精品久久国产高清情趣图文|
国产区亚洲一区在线观看|
中文字幕无码精品亚洲资源网|
超碰香蕉人人网99精品|
欧洲人妻丰满av无码久久不卡|
激情综合婷婷丁香五月|
日本乱偷人妻中文字幕在线|
中文字幕亚洲乱码熟女一区二区|
无套内谢孕妇毛片免费看|
久久亚洲精品国产精品婷婷|
久久视频这里只精品99|
国产亚洲人成无码网在线观看|
日本免费更新一二三区不卡|
亚洲韩国日本高清一区|
少妇人妻系列无码专区视频|
性高湖久久久久久久久aaaaa|
无码国产精品一区二区高潮|
久久99精品国产99久久6|
