2011年职称英语理工类A考前每日一练(22)

文章作者 100test 发表时间 2011:03:25 16:38:39
来源 100Test.Com百考试题网

下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。

　　第6部分：完形填空(第51～65题，每题1分，共15分)
　　下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
　　Cell Phone Lets Your Secret Out
　　Your cell phone holds secrets about you. Besides the names and_________ (51) that youve programmed into it, traces of your DNA linger(逗留) on the device, according to a new study.
　　DNA is genetic(遗传的) 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 (涎,唾液), 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.
　　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 0dropped 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(翻盖手机)of 10 volunteers. They used swabs(要签) 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 users ear.
　　The scientists scrubbed(用力擦洗.擦净) 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 phones 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 wont remove all traces of evidence from a criminals device. So cell phones can now be added to the_________ (65)of clues that can clinch(确定，决定) a crime-scene investigation.
　　51. A numbers
　　B. music
　　C. secrets
　　D. films
　　52 A appeals
　　B. appoint
　　C. appears
　　D. applies
　　53 A because
　　B. unless
　　C. although
　　D. still
　　54 A about
　　B. in
　　C. for
　　D. behind
　　55 A criminals
　　B. people
　　C. men
　　D. policemen
　　56 A when
　　B. until
　　C. before
　　D. than
　　57 A. device
　　B. paper
　　C. file
　　D. document
　　58. A. However
　　B. So
　　C. But
　　D. Nevertheless
　　59. A. invisible
　　B. non-existent
　　C. visible
　　D. apparent
　　60. A. card
　　B. keys
　　C. screen
　　D. speaker请访问百考试题网站http://www.233.com
　　61. A. of
　　B. up
　　C. on
　　D. into
　　62. A. upon
　　B. back
　　C. without
　　D. with
　　63. A. was given
　　B. belonged
　　C. was owned
　　D. became
　　64. A. Generally
　　B. Surprisingly
　　C. Disappointedly
　　D. Shortly
　　65. A. explanation
　　B. discovery
　　C. book
　　D. list

　　#0000ff>点击进入论坛查看答案