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
Historically, the spread, prevalence, and very existence of contagious disease have wholly depended on the growth and concentrat
Historically, the spread, prevalence, and very existence of contagious disease have wholly depended on the growth and concentrat
admin
2017-06-11
36
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.
【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://kaotiyun.com/show/75FO777K
0
考博英语
相关试题推荐
Duringthefamine,manypeoplewere____togoingwithoutfoodfordays.
Readthefollowingpassagecarefullyandthenparaphrasethenumberedandunderlinedparts.("Paraphrase"means"toexplainthem
LikemostotherAmericancompanieswitharigid____.workersandmanagershavestrictlydefinedduties.
Oneofthemajordifferencesbetweenmanandhisclosestlivingrelativeis,ofcourse,thatthechimpanzeehasnotdevelopedthe
Readthefollowingpassagecarefullyandthenparaphrasethenumberedandunderlinedparts.("Paraphrase"means"toexplainthem
Ahundredyearsagoitwasassumedandscientifically"proved"byeconomiststhatthelawsofsocietymakeitnecessarytohave
The_____oftwohousesprovedsuchafinancialburdenthattheywereforcedtosellone.
Thereisaheateddiscussioninthenewspaperontheissueofurbanization.Writeacompositiontoclarifyyourownpointofvie
Forthispart,youshouldwriteacompositiononthetopicOnInformationSecurity(信息安全问题).Youshouldwriteatleast200words.
Thereareanumberofformatsforreportingresearch,suchasarticlestoappearinjournals,reportsaddressedtofundingagenc
随机试题
简述经济法学的基本框架。
A.伞形科B.蔷薇科C.桔梗科D.石竹科E.玄参科地榆药材来源于
急性或亚急性皮炎而无渗液者可选用慢性局限性浸润肥厚性皮肤病者可选用
影响因素试验选用的样品是
关于细菌性阴道病的叙述不正确的是()
甲公司2015年度实现净利润350万元,流通在外的普通股加权平均数为500万股,优先股100万股,优先股股息为每股1元,如果2015年末普通股的每股市价为20元,则甲公司的市盈率是()。
按照豪斯的路径——目标理论,老赵的领导行为属于()。从领导技能的角度看,成功的领导需要具备的技能包括()。
2015年2月甲公司销售一批商品给乙公司,开出的增值税专用发票上注明的销售价款为200万元,增值税税额为34万元,货款未收到。由于乙公司到期无力支付款项,2015年6月甲公司同意乙公司将其拥有的一项固定资产(厂房)用于抵偿债务。乙公司固定资产账面原值为20
根据给定资料,回答以下问题。2013年,全国林产品出口644.55亿美元,同比增长9.82%,增幅比上年增加3.18个百分点,占全国商品出口额的2.92%。林产品进口640.88亿美元,同比增加3.45%,增幅比上年增加8.58个百分点,占全国商
CulturalDifferencesbetweenEastandWestI.FactorsleadingtotheculturaldifferencesA.Differentculture【T1】______【T1】_
最新回复
(
0
)