中华会计网校职业培训教育网联合推出
2014年职称英语考试试题:综合类阅读理解练习题(27)
BloodTestMayDetectCa
cerEarlyA
ewbloodtestmaysomedaymakeitpossiblefordoctorstodiag
oseca
cereve
beforeapatie
tdevelopssymptomsThe
ewtestdevelopedbyDrJo
atha
WUhroftheU
iversityofTexasa
dhiscolleaguesissose
sitivethatitca
detecto
eca
cercelli
amilliliter毫升ofblood“Ca
cercellsareshed脱落fromaprimarytumorearlyi
thelifehistoryofthetumor”Uhrexplai
ed“Thesheddi
gofthesecellsca
beusedasascree
i
g
testpote
tiallyforearlytumors”Toide
tifyepithelial上皮的cellscellsassociatedwith80ofca
cersamo
gothercellsi
thebloodUhrsteammixediro
particlesi
tobloodsamplesTheparticleswerecoatedwithsubsta
cesthatreactwithepithelialcellsa
dcausedthemtoseparatefromreda
dwhitebloodcellsThe
u
deralaserbeamepithelialcellsappearedtobeadiffere
tcolorfromotherbloodcellsa
dtheresearcherscouldcou
tthemusi
gamicroscopeUhra
dhiscolleaguesusedthismethodtotestbloodfrom30patie
tswithbreastca
cer3patie
tswithprostate前列腺ca
cera
d13healthysubjectsSamplesfromca
cerpatie
tsshowedsig
ifica
tlymoreepithelialcellstha
samplesfromhealthysubjectsTheresearchteamfou
depithelialcellseve
i
mostcasesofearlydiseasei
cludi
gsamplesfrom12ofthe14patie
tswhosebreastca
cerhad
otspreadbeyo
dthebreastI
aseparatestudythei
vestigatorstestedbloodsamplesfromeightpatie
tswithbreastca
ceratvariousi
tervalsover1to10mo
thsItshowedthatthe
umberofca
cercellsi
thebloodfellordisappearedduri
gchemotherapy化学疗法a
droseagai
iftumorsgrewagai
“Atthistimewebelievethemostimporta
ttestoftheuseful
essofourmethodistoscree
forearlydetectio
ofca
cersi
thege
eralpopulatio
”Uhrsgroupco
cluded“A
otherobjectivewouldbetobeabletopredict”saidUhr“Wewa
ttobeabletodetermi
ewhe
thesetumorcellsi
thebloodareaggressivea
dtreatme
tis
eededversuswhe
thisisasheddi
gthatisharmlessButitwilltakema
yma
yyearsa
dma
ypatie
tstodetermi
ethat”
_____________________________________________________________________1
f中华会计网校职业培训教育网联合推出31DrUhrs
ewtestca
beusedtofi
dthe
umberofAiro
particlesi
abloodsampleBepithelialcellsi
abloodsampleCbloodcellsi
abloodsampleDtumorsi
ahuma
body32Uhrsteammixediro
particlesi
tobloodsamplesAtoide
tifyredbloodcellsBtoseparateepithelialcellsfromreda
dwhitebloodcellsCtoide
tifywhitebloodcellsDtoide
tifythecolorofca
cers33I
a
otherstudyDrUhra
dhiscolleaguesfou
dthatthepatie
tsepithelialcellsAwouldi
creaseifthesepatie
tsco
ditio
tur
edbetr