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
You can tell a lot about people by looking at their hair—and not just whether they brush, spray, or blow-dry. Scientists hav
You can tell a lot about people by looking at their hair—and not just whether they brush, spray, or blow-dry. Scientists hav
admin
2016-06-02
25
问题
You can tell a lot about people by looking at their hair—and not just whether they brush, spray, or blow-dry.
Scientists have found a way to use hair to figure out where a person is from and where that person has been. The finding could help solve crimes, among other useful applications.
Water is central to the new technique. The liquid makes up more than half an adult human’s body weight. Our bodies break water down into its parts—hydrogen and oxygen.
But not all water is the same. Hydrogen and oxygen atoms can vary in how much they weigh. Different forms of a single element are called isotopes(核素). And depending on where you live, tap water contains unique proportions of the heavier and lighter isotopes of hydrogen and oxygen.
Might hair record all this information? That’s what scientists wondered. To find out, researchers collected hair from barbers in 65 cities in 18 states across the United States. The researchers assumed that the hair they collected came from people who lived in the area.
Even though people drink a lot of bottled water these days, the scientists found that hair did reflect the concentrations of hydrogen and oxygen isotopes in local tap water. That’s probably because people usually cook their food in the local water. What’s more, most of the other liquids we drink contain large amounts of water that also come from sources within their region.
Scientists already knew how the composition of water varies throughout the country. By combining that information with the results, they predicted the composition of hair in people from different regions.
The new technique can’t point to exactly where a person is from, because similar types of water appear in different regions that span(跨越)a broad area. But authorities can now use the information to analyze hair samples from criminals or crime victims and narrow their search for clues.
Based on the finding, one research offers this advice:"
If you’re a criminal, shave.
"
Which of the following is the most suitable title for the passage?
选项
A、Hair Detectives
B、Hair Signals Danger
C、Drink to Your Health
D、Water Tells Everything
答案
A
解析
本题是综合判断题。首先能够排除B)和C),文章没有提到这两项内容。D)过于绝对,并且没有提到跟头发的关系。因此,通过排除法可知A)比较全面,既包括头发这一要素,又提到利用头发来破案这一用途。
转载请注明原文地址:https://kaotiyun.com/show/XU5K777K
本试题收录于:
浙江省大学英语三级题库大学英语三级分类
0
浙江省大学英语三级
大学英语三级
相关试题推荐
Practicegetsarawdealinthefieldofappliedlinguistics.Mostlay-peoplesimplyassumesthatpracticeisanecessaryconditi
Practicegetsarawdealinthefieldofappliedlinguistics.Mostlay-peoplesimplyassumesthatpracticeisanecessaryconditi
Goodleadershiprequiresyoutosurroundyourselfwithpeopleof________perspectiveswhocandisagreewithyouwithoutfearofr
Todayscientistshaveagreaterunderstandingofgeneticsanditsrulein________organisms.
________2.6millionpeoplestartingdietsonNewYear’sDay,thereportsaysthatbytheendoftheweek92percentofdietersg
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestpictureswerepaintedbypeoplewhohuntedanimals.Th
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestpictureswerepaintedbypeoplewhohuntedanimals.Th
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestpictureswerepaintedbypeoplewhohuntedanimals.Th
随机试题
用a、b、c三种不同型号的客车送一批会议代表到火车站,用6辆a型车,5趟可以送完;用5辆a型车和10辆b型车,3趟可以送完;用3辆b型车和8辆c型车,4趟可以送完。问先由3辆a型车和6辆b型车各送4趟,剩下的代表还要由2辆c型车送几趟?()
藁本具有的功效
患者,男性,47岁,3小时前在劳动中无明显诱因突然出现上腹部剧烈刀割样疼痛,迅速遍及全腹,不敢直腰走路。肝浊音界消失,全腹有明显的腹膜刺激征,肠鸣音消失。最可能的诊断是
不孕症最常见的原因是
患者女,63岁。出现阴道不规则出血7个月,伴白带增多和腰痛,妇检发现宫颈可见菜花状新生物,直径约4cm,阴道前穹隆亦受累但未达阴道下1/3,左侧宫旁组织增厚但未累及盆壁,宫颈新生物活检示鳞状细胞癌。该患者的临床分期为
患者,男,65岁。有前列腺增生病史,小便频数不爽,淋漓不尽,伴头晕目眩,腰膝痰软,尿黄而热,舌红少苔,脉细数。治疗应首选
下列哪项不是涩脉的主病()
外贸公司为增值税一般纳税人,并具有进出口经营权,2009年3月发生相关经营业务如下:(1)从国外进口小轿车一辆,支付买价400000元、相关费用30000元,支付到达我国海关前的运输费用40000元、保险费用20000元。(2)将生产中
若有以下程序#includemain(){inti,j,m=1;for(i=1;i<3;i++){for(j=3;j>0;j--){if(i*>3)break;m*=
A、Attendaseminar.B、Meetaclient.C、Visitaproductshow.D、Takeatrainingclass.C细节推断题。男士询问女士是否去过新产品展销会,女士回答说没去过,但接着补充说这个周
最新回复
(
0
)