英语四级新闻听力练习 英语四六级报名

下面小编跟大家一起了解英语四级新闻听力分享，希望对大家的学习有所帮助。

听力练习

1.

A.AIsystemisusedtodetectsignsofcancerfromalargenumberofCTsamples.

B.AIsystemisusedtotreatlungcancer.

C.AIsystemisusedtoreplacecomputedtomography,orCTtodetectlungcancer.

D.AIsystemisusedtoidentifycausesoflungcancer.

2.

A.Itisestimatedthatcancerresultsinabout1.7milliondeathseachyear.

B.TheexaminationofCTscanstodetectlungcancerhasbeenshowntoreducedeathratesby20to43percent.

C.TheCDmethodresultsinahighrateoffalse-positiveorfalse-negativecancerdiagnoses

D.TheAIsystem'soverallsuccessratewas94.4percent.

听力文本

Researchershavedevelopedanewmachinesystemthattheysaycandetectlungcanceraswellasorbetterthandoctors.ThesystemispoweredbyadeeplearningalgorithmthatresearchersfromGoogleandNorthwesternUniversitycreated.TheWorldHealthOrganizationreportslungcanceristhemostcommonformofcanceracrosstheworld.TheWHOestimatesthateachyear,lungcancerresultsinabout1.7milliondeaths.Formanyyears,doctorshaveattemptedtoimprovescreeningmethodstodetectlungcancer.Themostcommontoolcurrentlyusediscomputedtomography,orCT.DoctorswhoaretrainedtostudyCTimagesoftissueexaminethescanstolookforevidenceofcancer.

Theprocesscaninvolvehundredsofimages.TheexaminationofCTscanstodetectlungcancerhasbeenshowntoreducedeathratesby20to43percent,thestudysaid.Butitalsonotedthatthemethodalsoresultsinahighrateoffalse-positiveorfalse-negativecancerdiagnoses.Thenewdeep-learningsystemusesanalgorithmandthree-dimensionalor3DtechnologytoexaminetheCTscans.ThemethodworksbylearninghowtodetectsignsofcancerfromalargenumberofCTsamples.Thestudyreportsthesystemwastestedon6,716caseswithknowndiagnoses,inpartnershipwiththeNationalCancerInstitute.Thesystem'soverallsuccessratewas94.4percent.WhenexaminingaCTscanfordiagnosis,thedeep-learningmodelperformedequaltoorbetterthansixradiologists,thestudyfound.Radiologistsspecializeinmedicalimagingtodiagnosedisease.

Question1:Accordingtothenewsreport,what’sthemainideaofthisnewsreport?

A.AIsystemisusedtodetectsignsofcancerfromalargenumberofCTsamples.

B.AIsystemisusedtotreatlungcancer.

C.AIsystemisusedtoreplacecomputedtomography,orCTtodetectlungcancer.

D.AIsystemisusedtoidentifycausesoflungcancer.

Question2:Accordingtothenewsreport,whichofthefollowingstatementsisnottrue?

A.Itisestimatedthatcancerresultsinabout1.7milliondeathseachyear.

B.TheexaminationofCTscanstodetectlungcancerhasbeenshowntoreducedeathratesby20to43percent.

C.TheCDmethodresultsinahighrateoffalse-positiveorfalse-negativecancerdiagnoses

D.TheAIsystem'soverallsuccessratewas94.4percent.

重点词汇

1.detect:todiscoversomething,usuallyusingspecialequipment（通常指用特殊设备）探测，检测，测出

2.algorithm:asetofmathematicalinstructionsorrulesthat,especiallyifgiventoacomputer,willhelptocalculateananswertoaproblem（尤指计算机使用的）算法，计算程序

3.tomography:theuseofX-raystomakethree-dimensionalimagesofflatsectionsofthebody断层成像，断层扫描

4.tissue:agroupofconnectedcellsinananimalorplantthataresimilartoeachother,havethesamepurpose,andformthestatedpartoftheanimalorplant（动物或植物的细胞）组织

5.diagnose:torecognizeandnametheexactcharacterofadiseaseoraproblem,byexaminingit诊断（病症）；查出（问题）

6.radiologist:apersonwhospecializesinradiology放射学家；放射医疗研究人员

背景知识

英国《自然·医学》杂志20日发表一项人工智能（AI）新进展，美国团队报告了一种能够根据胸部CT扫描来检测恶性肺结节的人工智能，其表现与人类放射医学专家相当，甚至超越后者。该深度学习模型提供了一种自动化的评估系统，用以提高早期肺癌诊断的准确性，帮助实施临床干预。

参考答案

Question1:A

Question2:A