首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Cell Phone Lets Your Secret Out Your cell phone holds secrets about you. Besides the names and【51】 that you’ve programmed in
Cell Phone Lets Your Secret Out Your cell phone holds secrets about you. Besides the names and【51】 that you’ve programmed in
admin
2011-01-02
60
问题
Cell Phone Lets Your Secret Out
Your cell phone holds secrets about you. Besides the names and【51】 that you’ve programmed into it, traces of your DNA linger on the device, according to a new study.
DNA is genetic material that【52】 in every cell. Like your fingerprint, your DNA is unique to you【53】 you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, or hair left【54】 at the scene of a crime. The results often help detectives identify【55】 and their victims. Your cell phone can reveal more about you【56】 you might think.
Method J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the【57】. This made her wonder whether traces of DNA lingered on cell phones—even when no blood was involved.【58】she and colleague Margaret Wallace of the City University of New York analyzed the flip-open phones of 10 volunteers. They used swabs to collect【59】 traces of the users from two parts of the phone: the outside, where the user holds it, and the【60】 , which is placed at the user’s ear.
The scientists scrubbed the phones using a solution made mostly【61】alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones【62】for another week. Then the researchers collected the phones and repeated the swabbing of each phone once more.
The scientists discovered DNA that【63】to the phone’s speaker on each of the phones. Better samples were collected from the outside of each phone, but those swabs also picked up DNA that belonged to other people who had apparently also handled the phone.【64】, DNA showed up even in swabs that were taken immediately after the phones were scrubbed. That suggests that washing won’t remove all traces of evidence from a criminal’s device. So cell phones can now be added to the【65】of clues that can clinch a crime-scene investigation.
选项
A、card
B、keys
C、screen
D、speaker
答案
D
解析
研究者从手机的两个部位收集手机微量DNA:一是手机外壳,二是贴在耳朵上的喇叭。所以选D。
转载请注明原文地址:https://kaotiyun.com/show/pkLd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
Theblazehasblackenedabout389,000acresanddestroyed11buildings.
WronglyConvictedManandHisAccuserTellTheirStoryNEWYORKNY,January5,2010,St.Martin’sPresshasannouncedthere
ListeningtoBirdsongAmalezebrafinchchirpsawaytohimself.Suddenlyhenoticesafemalebirdnearby.Herealizesheha
FluShotsOrNot?ItsoundedlikeagoodideawhenNewYorkCity’smayor,RudollphGiuliani,advisedNewYorkersrecentlyto
AWonderfulChipItistiny,onlyaboutaquarterofaninchsquare,andquiteflat.Underamicroscope,itresemblesasty
AWonderfulChipItistiny,onlyaboutaquarterofaninchsquare,andquiteflat.Underamicroscope,itresemblesasty
Whatweretheconsequencesofthedecisionshehadmade?
Whatweretheeffectsofthedecisionshehadmade?
TheAmericanFamilyIntheAmericanfamilythehusbandandwifeusuallyshareimportantdecisionmaking.Whenthechildrenare(5
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisroundtovaryonlyslightlyfromplacetoplace.Nevertheless,someoft
随机试题
与印模要求无关的是A.印模必须清晰B.印模必须光滑C.印模必须完整无缺D.印模不能与托盘分离E.印模必须是硅橡胶
WHO关于乳腺癌TNM分期中T3是指肿瘤直径
需要延长造影时间的为
贫血时病人皮肤及黏膜苍白,较为可靠的检查部位是
甲向乙开具金额为100万元的汇票以支付货款。乙取得该汇票后背书转让给丙,丙又背书转让给丁,丁再背书转让给戊。现查明,甲、乙之间并无真实交易关系,丙为未成年人,票据金额被丁变造。下列哪些选项是正确的?
如果鲁天在1999年3月谢威向法院起诉前两年已离家出走,法院应如何处理?如果法院审理该案的过程中发现谢威怀孕己3个月,法院应当如何处理?
在项目实施阶段,工程管理的核心是()。
Youaregoingtoreadanarticlewhichisfollowedbyalistofexamplesorheadings.Choosethemostsuitableonefromthelist
【S1】【S5】
Themedicalworldisgraduallyrealizingthatthequalityoftheenvironmentinhospitalsmayplayasignificantroleinthepro
最新回复
(
0
)