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
2019-04-08
49
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.
As to the solution of the problems in the future, the author appears to be
选项
A、somewhat doubtful.
B、much skeptical.
C、moderately optimistic.
D、extremely desperate.
答案
C
解析
该题为观点态度题。根据最后一段的最后一句“We may not completely win the 21st century microbe war,but I am confident that we won’t lose it.”可知,作者认为我们也许不会完全赢得21世纪的细菌战争,但他坚信我们并不会失败。可见作者对解决问题的态度是适度乐观的,故选C。
转载请注明原文地址:https://kaotiyun.com/show/5BCd777K
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
TheCarnegieFoundationreportsaysthatmanycollegeshavetriedtobe"allthingstoallpeople".Indoingso,theyhaveincre
Asweenterthe21stcentury,anewglobaleconomydrawsnationsevercloser.Butourgrowinginterdependence【21】______onm
Howlongdoesaninterviewusuallylastaccordingtothespeaker?
Tostartwith,youshouldselectthe______.
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Amarketiscommonlythoughtofasaplacewherecommoditiesareboughtandsold.Thusfruitandvegetablesaresoldwholesale
Oneimportantaspectofretirementformostpeopleisdecidingwheretolive.Inthepast,thiswasnotanissuebecausemostel
Everycultureattemptstocreatea"universeofdiscourse"foritsmembers,awayinwhichpeoplecaninterprettheirexperience
WhenIdecidedtoquitmyfulltimeemploymentitneveroccurredtomethatImightbecomeapartofanewinternationaltrend.
kitchen
随机试题
下列哪项是诊断缺铁最肯定的依据
2007年5月15日,甲(住A市C区)、乙(住A市C区)二人在A市D区某酒吧因琐事斗,二人均受伤,事发后,当地派出所警察丙根据《治安管理处罚法》对甲处罚400元,对乙罚款200元,甲不服,向A市D区公安分局申请行政复议,后者对甲、乙二人分别做出了罚款200
采用估算工程量单价合同时,最后工程的总价是按( )计算确定的。
甲公司为乙公司的母公司,甲公司拥有乙公司80%的股份,所得税税率为25%。有关内部交易资料如下:(1)2013年4月28日甲公司从乙公司购进其生产的设备一台,该设备成本400万元,售价526.5万元(含增值税,增值税税率为17%),另付运输安装费12万元
你的工作经历相对于我们岗位要求来说,还有对政策不熟悉、高度不够等劣势,你有什么优势,对你的劣势如何弥补?(观众评委针对个人提问)
其实自从选择了现代化发展之路,汉字手写被更为高效和标准的键盘输入所替代就是必然结果。御牛耕地,烧火做饭,这些中国人千百年来赖以糊口吃饭的基本技能,都在逐渐退出历史舞台。生存和生活技能的更新换代,是人类文明逐渐进步的伴随现象,这是生产力不断上升的结果,是历史
(A)条件(1)充分,但条件(2)不充分.(B)条件(2)充分,但条件(1)不充分.(C)条件(1)和条件(2)单独都不充分,但条件(1)和条件(2)联合起来充分.(D)条件(1)充分,条件(2)也充分.(E)条件(1)和条件(2)单独都不充分,条
系统分析也称需求分析,以下不属于系统分析内容的是
Therearetwomethodsoffighting,theonebylaw,theotherbyforce;thefirstmethodisthatofmen,thesecondofbeasts;an
TheMonaLisaisshowingherage,museumcurators(馆长)inParissaidwhileannouncingascientificstudyofthe500-year-oldmas
最新回复
(
0
)