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
2019-01-25
36
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/3oCd777K
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
Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehorizonsofscientificknowledge.
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
Asweenterthe21stcentury,anewglobaleconomydrawsnationsevercloser.Butourgrowinginterdependence【21】______onm
Asweenterthe21stcentury,anewglobaleconomydrawsnationsevercloser.Butourgrowinginterdependence【21】______onm
Asweenterthe21stcentury,anewglobaleconomydrawsnationsevercloser.Butourgrowinginterdependence【21】______onm
Asweenterthe21stcentury,anewglobaleconomydrawsnationsevercloser.Butourgrowinginterdependence【21】______onm
Asweenterthe21stcentury,anewglobaleconomydrawsnationsevercloser.Butourgrowinginterdependence【21】______onm
随机试题
穆旦诗歌《智慧之歌》中,“我”认为“唯有一棵智慧之树不凋”的原因是【】
不具有抗炎抗风湿作用的解热镇痛药是
一患者因车祸伤及颅面部,有一过性昏迷病史。急诊检查发现面中份凹陷,眶周瘀血,咬合错乱,后牙早接触,前牙开。应首先做哪项辅助检查
A.脾B.膈C.胃D.肝E.肺呃逆之病变部位在()
A、打粉B、煎煮浓缩成膏C、单提挥发油或双提法D、提取单体E、制成醇浸膏制片剂时,处方中的大腹皮、磁石的一般处理方法为
固体分散体的水溶性载体材料是制备脂质体常用的材料是
可作为医疗机构制剂申报的品种是
抗日战争相持阶段到来以后,由于以蒋介石为代表的国民党亲英美派开始推行消极抗日、积极反共的政策,团结抗战的局面逐步发生严重危机,出现了中途妥协和内部分裂两大危险。针对这种情况,1939年7月,中国共产党明确提出的口号有()
求直线的夹角.
1.现在有许多大学生参与商业活动2.对大学生是否应该参与商业活动有许多说法3.我的看法
最新回复
(
0
)