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
Germs(细菌)on Banknotes People in different countries use different types of money: yuan in China, pesos in Mexico, pounds in t
Germs(细菌)on Banknotes People in different countries use different types of money: yuan in China, pesos in Mexico, pounds in t
admin
2012-12-06
24
问题
Germs(细菌)on Banknotes
People in different countries use different types of money: yuan in China, pesos in Mexico, pounds in the United Kingdom, dollars in the United States, Australia and New Zealand. They may usedifferent currencies, but these countries, and probably all countries, still have one thing in (51) (变化): germs on the banknotes.
Scientists have been studying the germs on money for well over。100 years. At the turn of the 20th (52) , some researchers began to suspect that germs living on money could spread disease.
Most studies of germy money have looked at the germs on the currency (53) one country. In a new study, Frank Vriesekoop and other researchers compared the germ populations found on bills of different (54) .
Vriesekoop is a microbiologist at the University of Ballarat in Australia. He led the study, which compared the germ populations found on money (55) from 10 nations. The scientists studied l,280 banknotes in total; all came from places where people buy food, like supermarkets, street vendors and cafes, (56) those businesses often rely on cash.
Overall, the Australian dollars hosted the fewest live bacteria—no more than 10 per square centimeter. Chinese yuan had the (57) (变化)—about 100 per square centimeter. Most of the germs on money probably would not cause harm.
What we call "paper money" (58) (变化)isn’t made from paper. The U.S. dollar, for example, is printed on fabric that is mostly cotton. Different countries may use different (59) to print their money. Some of the currencies studied by Vriesekoop and his team, such as the American dollar, were made from cotton. Others were made from polymers.
The three (60) with the lowest numbers of bacteria were all printed on polymers. They included the Australian dollar, the New Zealand dollar and some Mexican pesos.
The (61) (变化)currencies were printed on fabric made mostly of cotton. Fewer germs lived on the polymer notes. This (62) (变化) suggests that germs have a harder time staying alive on polymer surfaces. Scientists need to do more studies to understand (63) (变化)germs live on money—and whether or not we need to be concerned. Vriesekoop is now starting a study that will (64) the amounts of time bacteria can stay alive on different types of bills.
Whatever Vriesekoop finds, the fact remains:Paper money (65) (变化) germs. We should wash our hands after touching it; After all, you never know where your money’s been. Or what’s living on it.
选项
A、because
B、though
C、so
D、when
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/QLQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
ClinicalTrials1Manyclinicaltrialsaredonetoseeifanewdrugordeviceissafeandeffectiveforpeopletouse.Sometime
KnowingYourRealPersonalityfromSleepingPositionsEveryonehasgottwopersonalities—theonethatisshowntotheworld
TryingtoFindaPartnerOneofthemoststrikingfindingsofarecentpollintheUKisthatofthepeopleinterviewed,one
ManyAmericanwomenhaveapoorknowledgeofcancer.Peoplewithnofamilyhistoryofcancerareunlikelytodevelopcancer.
Humanfacialexpressionsdifferfromthoseofanimalsinthedegreetowhichtheycanbedeliberatelycontrolledandmodified.
Throughouttheworldthereisashortageofhumanorgansfortransplants.InBritain,forexample,6000peoplearewaitingforo
Recentpressureatworkmayaccountforhisbehavior.
Pandemic(大面积流行的)H1N12009ThemostactiveareasofpandemicinfluenzatransmissioncurrentlyareincentralandeasternEur
IntheUnitedStates,theneedtoprotectplantandanimalspecieshasbecomeahighlycontroversialandsharplypoliticalissue
随机试题
能激活血浆中LCAT的载脂蛋白是A.ApoAⅠB.ApoAⅡC.ApoBD.ApoCE.ApoE
下列哪一种疾病禁用硫脲类抗甲状腺药:
治疗肺炎喘嗽痰热闭肺证,应首选
下列关于压路机的使用技术要求的说法中,正确的是()。
根据规定,因工程量偏差引起的可以调整措施项目费的前提是()。
某旅行社与航空公司,出租汽车公司合作,采用代购机票,免费机场接送的营销方法吸引更多的客户。该旅行社采用的战略是()。
A、 B、 C、 D、 D考虑每个图形的对称轴数。每行来看,对称轴数依次是1、2、1,选项中只有D的对称轴数为1。
语言在代代相传的过程中会发生改变。在人口众多的族群中,语言倾向于保持_______。原因很简单,因为有更多的人能记住上一辈说话的方式。然而在规模较小的族群中,语言有可能更快地发生变化,在世代交替中有些音素将会_______。填入画横线部分最恰当的
实现由理性认识向实践的第二次飞跃,必须具备的条件有( )
Inanidealworld,thenation’seliteschoolswouldenrollthemostqualifiedstudents.Butthat’snothowit(1)_____.Applicant
最新回复
(
0
)