共用题干Cerms(细菌) on BanknotesPeople 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 use different cur-rencies,but these countries,and probably all countries,still have one thing in ________(51):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 dif-ferent ________(54)Vriesekoop is a microbiologist at the University of Ballarat in Australia.He led the study,which corn-pared the germ populations found on money _______(55)from 10 nations.The scientists studied 1,280 banknotes in total;all came from places where people buy food,like supermarkets,street vendors andcafes,________ (56)those businesses often rely on cash.Overall,the Australian dollars hosted the fewest live bacteria一no more than 10 per square centimeter. Chinese yuan had the________(57)一about 100 per square centimeter. Most of the germs on money probably would not cause harm.What we call "paper money"________(58)isn'tmade 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)currencies were printed on fabric made mostly of cotton.Fewer germs lived on the polymer notes.This_______(62)suggests that germs have a harder time staying alive on polymersurfaces.Scientists need to do more studies to understand _________(63)germs live on money一andwhether 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)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._________(64)A:completeB:compareC:cancelD:command

共用题干
Cerms(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 use different cur-
rencies,but these countries,and probably all countries,still have one thing in ________(51):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 dif-
ferent ________(54)
Vriesekoop is a microbiologist at the University of Ballarat in Australia.He led the study,which corn-
pared the germ populations found on money _______(55)from 10 nations.The scientists studied 1,280
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一no more than 10 per square centimeter.
Chinese yuan had the________(57)一about 100 per square centimeter. Most of the germs on money
probably would not cause harm.
What we call "paper money"________(58)isn'tmade 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)currencies were printed on fabric made mostly of cotton.Fewer germs lived on
the polymer notes.This_______(62)suggests that germs have a harder time staying alive on polymer
surfaces.Scientists need to do more studies to understand _________(63)germs live on money一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)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.

_________(64)
A:complete
B:compare
C:cancel
D:command

参考解析

解析:第一段在列举了各国使用不同货币的情况之后,点明了这些不同的货币上有一个相同 的地方,即上面都有细菌,故选C。
词组at the turn of the 20th century表示“在二十世纪之交”,其他各项都不能用于这个结构,故选C。
第三段主要对比讲述了两个范围的钞票细菌的研究,前面是局限在一国的研究,而后 者是研究不同国家的货币细菌的情况,故选B。
此空上文讲述了多数针对一国货币细菌的研究,这里则是对比讲述了不同国家的货币 细菌研究的情况,故选A。
单词borrow的意思为“借人”;deliver的意思为“递送”;design的意思为“设计”;gather的意思为“收集,集中”。此处指的是把10个国家的钞票收集起来进行集中研究,故选D。
四个选项中只有becaus。接表示原因的从句,其他选项都不适用于本题语境,故选A。
此空上文提到澳元上每平方厘米里只有不超过10个细菌,是最少的,而人民币在相同 范围内有大约100个,应是最多的,故选A。
单词similarly的意思为“相似地”;hardly的意思为“几乎不”;slightly的意思为“稍微 地”;usually的意思为“通常地”。由下文内容可知,所谓的纸币通常并非用纸制成,故选D。
由下文列举的几种制造钞票的材料可知,此处指的应是不同的国家所用的制作钞票的 材料不同,故选C。
本文所探讨的是对各种货币上细菌的研究,故应选B。
指一组中其余的人或事物用the other,其后接名词复数。故选D。
由上文的内容可知,Vriesekoop及其研究小组所收集的几个国家的钞票中,用聚合物制 成的钞票和由棉花制成的钞票相比,以聚合物为材料的钞票所含细菌更少,这个联系说明细菌难以在聚合物上存活,故选A。
此空的上一句提到细菌很难在聚合物上存活,因此接下来的研究应该研究细菌是如何在钞票上生活的,故选C。
由下文“on different types of bills”的提示可知,这里是比较不同钞票上的细菌的存活时间,故选B。
不同钞票上所含细菌不同,无论细菌数目和存活时间如何不同,不可否认的一个事实是它们都不可避免地会携带细菌,故选C。

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Which description about asymmetric encryption algorithms is correct?()A、They use the same key for encryption and decryption of data.B、They use different keys for decryption but the same key for encryption of data.C、They use different keys for encryption and decryption of data.D、They use the same key for decryption but different keys for encryption of data.

单选题According to the passage, the scientists carried out their researches on ______.Asmokers from different parts of the worldBsmokers from different states in the United StatesCactors and actresses who smoke a lotDwait staff and bartenders

单选题According to the author, the United States claims to be a nation _____.Acomposed of people having different valuesBencouraging individual pursuitsCsharing common interestsDfounded on shared ideals

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单选题According to the passage, a major difference between the colonization policy of the United States and that of Mexico in Texas in the 1800’s was the _____.Adegree to which policies were based on traditionBform of economic interdependency between different cultural groupsCtreatment of the native inhabitantsDrelationship between the military and the settlers

单选题Which description about asymmetric encryption algorithms is correct?()AThey use the same key for encryption and decryption of data.BThey use different keys for decryption but the same key for encryption of data.CThey use different keys for encryption and decryption of data.DThey use the same key for decryption but different keys for encryption of data.

单选题Which do you choose as the best title for this passage?AMoney and Its UseBDifferent Things Used as MoneyCDifferent Countries, Different MoneyDThe History of Money

单选题If you make different trade in different countries, you must take different transport modes? ()AYesBNotCIt must be based on costDNot mention in the paragraph