首页
登录
职称英语
Historically, the spread, prevalence, and very existence of contagious disea
Historically, the spread, prevalence, and very existence of contagious disea
游客
2025-04-03
10
管理
问题
Historically, the spread, prevalence, and very existence of contagious disease have wholly depended on the growth and concentration of human populations.【R1】______And though the last century has witnessed substantial worldwide success in combating many past scourges—such as polio and smallpox—infectious diseases still claim more lives than any other group of diseases. The prevailing demographic trends continue to create a crowded human " medium" that both invites and is vulnerable to infection.
The share of humanity living in cities with more than 1 million people has surged from less than 5 percent in 1900 to nearly 40 percent today, creating the ideal setting for the resurgence of old infectious diseases as well as the development of new ones.【R2】______
Overcrowding—the increased proximity of susceptible individuals—is a principal risk factor for the incidence and spread of all major infectious diseases, including tuberculosis, dengue fever, malaria, and acute respiratory illnesses, which are unable to spread and survive in low population densities.【R3】______
Aside from sheer growth and increasing density, the urbanization under way in developing nations is often accompanied by deteriorating health indicators and increased exposure to disease risk factors.
Access to clean water, good hygiene, and adequate housing are sorely lacking in developing nations. As a result, waterborne infections such as cholera and other diarrheal diseases account for 90 percent of all infectious diseases in developing countries—and 40 percent of all deaths in some nations.【R4】______
In both industrial and developing nations, incidences of a wide range of infectious diseases, including tuberculosis, diarrheal diseases, and HIV/AIDS, are considerably higher in urban slums— where poverty and compromised health define the way of life—than in the rest of the city.【R5】______
A. Key disease carriers, such as insects and rats, thrive in crowded urban settings, further facilitating spread.
B. The unprecedented population densities in fourteenth-century Europe, for example, led to the plague outbreak that claimed the lives of one fourth of the population.
C. Although these infections are easily preventable if adequate water and sanitation are available, the vast majority of the world’s population is lifelong victims.
D. While new global markets have created unprecedented economic opportunities and growth, the health risks of our increasingly interconnected and fast-paced world continue to grow.
E. Pathogens can more readily establish in large populations, since all infectious diseases require a critical number of vulnerable individuals in order to take root and spread.
F. These areas can serve as a perpetual reservoir of disease or disease vectors, placing other parts of the city at risk of an outbreak and allowing the disease to continue evolving, often into a deadlier strain. [br] 【R4】
选项
答案
C
解析
从本题的前一句“As a result,waterborne infections such as cholera and otherdiarrheal diseases…and 40 percent of all deaths in some nations.”可知,水生的传染病在许多国家大面积传播,导致很多人丧命,本题的答案是对此问题的总结,C符合此意。
转载请注明原文地址:https://tihaiku.com/zcyy/4024085.html
相关试题推荐
Today,cigarettesmokingisawidespreadhabit.About43percentoftheadul
Today,cigarettesmokingisawidespreadhabit.About43percentoftheadul
Today,cigarettesmokingisawidespreadhabit.About43percentoftheadul
Thereiswidespreadbeliefthattheemergenceofgiantindustrieshasbeena
Thereiswidespreadbeliefthattheemergenceofgiantindustrieshasbeena
Thereiswidespreadbeliefthattheemergenceofgiantindustrieshasbeena
Thereiswidespreadbeliefthattheemergenceofgiantindustrieshasbeena
Electronicmailhasbeeninwidespreaduseformorethanadecade,simplifyi
Electronicmailhasbeeninwidespreaduseformorethanadecade,simplifyi
Widespreadwagereductionswereimposedduringtherecessionof1906—1909andpr
随机试题
[originaltext]Cairoisknownforitsovercrowdedroads,irregulardrivingpr
下列关于项目实施与控制的说法,正确的有()。A.项目控制是属于目标控制的范畴
力学强度是水泥和水泥混凝土材料一项重要性能指标,下表列出水泥胶砂和水泥混凝土各一
依据《公路工程质量检验评定标准第一册土建工程》(JTGF80/1-2017)的规
关于进度计划调整的说法,正确的是()。A、网络计划中某项工作进度超前,不需要进
乙脑病毒主要侵犯的人体系统是()。A.免疫系统 B.呼吸系统 C.循环系统
()年,国务院颁布《减持国有股筹集社会保障资金管理暂行办法》。通过国有股变现解决
按照《证券投资基金销售管理办法》,下列可以作为基金代理销售资格的机构有()。A
在选择380V低压配电设备时,下列哪项不能作为功能性开关电器?()A.接触器
(2019年真题)使用承租的机械设备和施工机具及配件的,由()共同进行验收。A
最新回复
(
0
)