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  3. 共用题干 Cerms（细菌） on BanknotesPeople in different countries use different types...

共用题干 Cerms（细菌） on BanknotesPeople in different countries use different types...

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问题 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.
选项 _________(63)
A:if
B:where
C:how
D:when
答案C
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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