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
In the 21st century there’s no doubt that frightening new infectious diseases will appear. Today new viruses are coming out of n
In the 21st century there’s no doubt that frightening new infectious diseases will appear. Today new viruses are coming out of n
admin
2018-04-28
80
问题
In the 21st century there’s no doubt that frightening new infectious diseases will appear. Today new viruses are coming out of nature and "discovering" the human species. Just since 1994, at least 30 new viruses have appeared.
Viruses are moving into the human species because there are more of us all the time. From a virus’ point of view, we look like a free lunch that’s getting bigger. In nature viral diseases tend to break out when populations increase rapidly and become densely packed. Then many deaths occur and the population drops. This is nature’s population-control mechanism. There is no reason to think the human race is free from the laws of nature.
Giving these laws an extra push will be the rise of megacities—huge densely packed cities in less developed nations. A United Nations study predicts that by the year 2015, there will be 26 extremely big cities on the planet. By then, some megacities could have 30 million or more people. That is approximately the total population of California. Imagine all the people in California crowded together tightly into one vast city. Then remove most doctors and medical care, take away basic sanitation and hygiene, and you have a biological "time bomb". Now make eight or ten such "bombs" and plant them around the world.
Also consider the biological weapons the world will be capable of producing in the future. The 20th century saw the creation of great and terrible weapons based on the principles of nuclear physics. The 21st century will see great and terrible weapons based on the knowledge of DNA and the genetic code. As biotechnology becomes more sophisticated and powerful, biologists will learn how to mix genes of different microbes to create unnatural strains that can be turned into deadly, effective weapons.
Biological weapons are a disgrace to biology. Most biologists haven’t wanted to talk or even think about them. The physicists lost their innocence when the first nuclear bomb went off in 1945. The biologists will lose their innocence when the first biological weapon spreads through the human species.
Yet the 20th century survived despite the existence of the nuclear bomb. There was great economic and scientific progress and much human happiness. The same can be true in the next century. We may not completely win the 21st century microbe war, but I am confident that we won’t lose it.
The author implies in the text that
选项
A、weapons now fall into quite different categories.
B、biological war may break out any time.
C、most scientists are against nuclear weapons.
D、science is liable to be used to create great evils.
答案
D
解析
该题为推断题。根据第五段第三句和第四句“The physicists lost their innocence when the first nuclear bomb went off in 1945. The biologists will lose their innocence when the first biological weapon spreads through the human species.”可知,当1945年第一个核炸弹爆炸的时候,物理学家失去了他们的清白。而当第一个生化武器传播于人类的时候,生物学家也会失去他们的清白,由此可推断出科学可能会使人们创造出巨大的罪恶,D项符合文意;A、B、C三项内容在文中均没有明确体现,故选D。
转载请注明原文地址:https://kaotiyun.com/show/GSRd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Whyare"Clovispeople"believedtofirstenterNorthAmerica?
OneofthemostpowerfultoolseverdevelopedistheP.C.,thepersonalcomputer.Oneofthecompaniesimportanttothehistory
Environmentalissuesraiseahostofdifficultethicalquestions,includingtheancientoneofthenatureofintrinsicvalue.Wh
61)Aninvisibleborderdividesthosearguingforcomputersintheclassroomonthebehalfofstudents’careerprospectsandtho
Thehealth-careeconomyisfilledwithunusualandevenuniqueeconomicrelationships.Oneoftheleastunderstoodinvolvesthe
Islamiclawisaparticularlyinstructiveexampleof"sacredlaw".Islamiclawisaphenomenonsodifferentfromallotherforms
Although【21】______circuitsmadecomputerssmaller,theprocessingunitsstillconsisted【22】______anumberofcircuits
Whatistheoccasionfortheman’sspeech?
Whatistheoccasionfortheman’sspeech?
OvershadowedbyrowsoverNigeriaandLockerbie,theCommonwealth’sattemptstorefocusontradeandinvestment—themaintheme
随机试题
慢性胰腺炎病人合并以下哪项表现时适于手术治疗()
新生儿体温过高首选的护理措施是
医学伦理学的公正原则是
[2004年第47题]《民用建筑热工设计规范>中有条文提出“连续使用的空调建筑,其外围护结构内侧和内围护结构宜采用重质材料”主要原因是:
基金交易业务的内部控制制度应对()等交易形式制定相应的流程和规则。Ⅰ.场内交易Ⅱ.场外交易Ⅲ.网下申购Ⅳ.网上申购
房产出租时,如果以劳务为报酬抵付房租收入的,应根据当地同类劳务的半均价格折算为房租收入,据此计征房产税。()
外国甲公司2017年为中国乙公司提供产品设计服务,为开展工作在乙公司所在市区租赁一办公场地,其服务情况如下:(1)1月6日,甲公司与乙公司签订服务合同,确定产品设计服务相关内容,合同约定服务期限为7个月,服务所产生的税费由税法规定的纳税人缴纳,合同约
根据下列资料,回答下列问题。2014年上半年全国共生产汽车1178万辆,同比增长9.6%,其中,乘用车971万辆,同比增长12.1%;商用车207万辆,同比下降0.6%。销售汽车1168万辆,同比增长8.4%,其中乘用车963万辆,同比增长11.
关于票据贴现与贷款的区别的说法,正确的有()。
Forthe1992WinterGames,Frenchorganizersconstructedanewmotorway,parkinglotsandrunsforskiingintheAlps.Environme
最新回复
(
0
)