The scientists discovered DNA that 13 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. 14, 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 15 of clues that can clinch a crime-scene investigation.
词汇:
linger v.逗留flip-open phone 翻盖手机
genetic adj.遗传的swab n. 药签
saliva n. 涎,唾液scrub v. 用力擦洗;擦净
bleed v. 流血clinch v.确定,决定
注释:
1.McMaster University:麦克马斯特大学,位于加拿大安大略省汉密尔顿市,成立于1887年。
2.DNA:脱氧核糖核酸。系deoxyribonucleic acid的缩写。 .
3.flipopen phones:翻盖手机。又可作flip phones。
练习:
1. A numbers B music C secretsD films
2. A appeals B appointC appearsD applies
3. A because B unless C although D still
4. A about B in C forD behind
5. A criminals B people C men D policemen
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