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 【C1】______that you’ ve progra
Cell Phone Lets Your Secret Out Your cell phone holds secrets about you. Besides the names and 【C1】______that you’ ve progra
admin
2013-11-20
24
问题
Cell Phone Lets Your Secret Out
Your cell phone holds secrets about you. Besides the names and 【C1】______that you’ ve programmed into it, traces of your DNA linger on the device, according to a new study.
DNA is genetic: material that 【C2】______in every cell. Like your fingerprint, your DNA is unique to you—【C3】______you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, or hair left 【C4】______at the scene of a crime. The results often help detectives identify【C5】______and their victims. Your cell phone can reveal more about you 【C6】______you might think.
Meghan 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 【C7】______. This made her wonder whether traces of DNA lingered on cell phones even when no blood was involved.【C8】______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 【C9】______traces of the users from two parts of the phone: the outside, where the user holds it, and the 【C10】______, which is placed at the user’ s ear.
The scientists scrubbed the phones using a solution made mostly 【C11】______alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones 【C12】______for another week. Then the researchers collected the phones and repeated the swabbing of each phone once more.
The scientists discovered DNA that 【C13】______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.【C14】______, 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【C15】______of clues that can clinch a crime-scene investigation.
【C12】
选项
A、upon
B、back
C、without
D、with
答案
B
解析
根据对上下文的理解,应该选择back。本句意思为:手机拥有者拿回了手机,再使用一个星期。
转载请注明原文地址:https://jikaoti.com/ti/4U6sFFFM
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
ExerciseWhetherornotexerciseaddstothelengthoflife,itiscommonexperiencethatacertainamountofregularexerci
OntheTrialoftheHoneyBadgerOnarecentfieldtriptotheKalahariDesert,ateamofresearcherslearnalotmoreabout
Obesity:theScourgeoftheWesternWorldObesityisrapidlybecominganewscourgeofthewesternworld,delegatesagreeda
TheDrinkYourBodyNeedsMost1Ourbodiesareestimatedtobeabout60%to70%water.Bloodismostlywater,andourmuscles,
Itisnousedebatingtherelativemeritsofthispolicy.
Wecannotpermitsuchconduct.
A.differentlabelsB.windowandglassdoorsC.inlandfloodingD.earlywarningE.naturaldisasterF.aconstantspeedDurin
Hehastroubleunderstandingthatotherpeoplejudgehimbyhissocialskillsandconduct.
Agreatdealhasbeendonetoremedythesituation.
Hewastemptedbythehighsalaryofferedbythecompany.
随机试题
2004年以后,乡级人民代表大会每届任期为()
(1)基于对蛋白质基元和结构域研究所获得的结果,有人说蛋白质的三级结构比一级结构更加保守,可以对以序列分析追踪蛋白质进化上关系的系统提供一种有效的补充。是否同意这种观点,请说说你的理由。(2)离子键是推动蛋白质折叠的重要作用力吗?请说明理由。
某胎儿超声声像图如下,最可能的诊断为
医师处方并开二地时,应付
长城股份有限公司(下称“长城公司”)2015年度发生与股权投资相关的交易或事项如下:1.2015年2月3日,长城公司以银行存款按12.4元/股的价格购入黄山公司发行在外的普通股股票10万股(其中含有已宣告但尚未发放的现金股利0.4元/股),另支付相关税费
下列各项中,计入外购的投资性房地产实际成本的有()。
Onlyaftertalkingtotwostudents______thathavingstrongmotivationisoneofthebiggestfactorsinreachinggoals.
某县为了改善办学条件,计划集中采购一批投影仪和教室音响。已知购买2套教室音响比购买3台投影仪多4000元,购买4套教室音响和3台投影仪共需要71000元,则1套教室音响比1台投影仪贵:
下列各组辅音,区别特征为清浊对立的一组是()。
设A,B相互独立,只有A发生和只有B发生的概率都是,则P(A)=___________.
最新回复
(
0
)