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
考研
Predicting the future is risky business for a scientist. It is safe to say, however, that the global AIDS epidemic will get much
Predicting the future is risky business for a scientist. It is safe to say, however, that the global AIDS epidemic will get much
admin
2013-06-12
85
问题
Predicting the future is risky business for a scientist. It is safe to say, however, that the global AIDS epidemic will get much worse before it gets any better. Sadly, this modern plague will be with us for several generations, despite major scientific advances.
As of January 2000, the AIDS epidemic had claimed 15 million lives and left 40 million people living with a viral infection that slowly but relentlessly erodes the immune system. Accounting for more than 3 million deaths in the past year alone, the AIDS virus has become the deadliest microbe in the world. In Africa nearly a dozen countries have a rate higher than 10%, including four southern African nations in which a quarter of the people are infected. This is like condemning 16 000 people each day to a slow and miserable death.
Fortunately, the AIDS story has not been all
gloom and doom
. Less than two years after AIDS was recognized, the guilty agent—human immunodeficiency virus, or HIV—was identified. We now know more about HIV than about any other virus, and 14 AIDS drugs have been developed and licensed in the U.S. and Western Europe.
The epidemic continues to rage, however, in South America, Eastern Europe and sub-Saharan Africa. By the year 2025, AIDS will be by far the major killer of young Africans, decreasing life expectancy to as low as 40 years in some countries and single-handedly erasing the public health gains of the past 50 years.
It is Asia, with its huge population at risk, that will have the biggest impact on the global spread of AIDS. The magnitude of the incidence could range from 100 million to 1 billion, depending largely on what happens in India and China. Four million people have already become HIV-positive in India, and infection is likely to reach several percent in a population of 1 billion. Half a million Chinese are now infected; the path of China’s epidemic, however, is less certain.
An explosive AIDS epidemic in the U.S. is unlikely. Instead, HIV infection will continue to plague in about 0.5% of the population. But the complexion of the epidemic will change. New HIV infections will occur predominantly in the underclass, with rates 10 times as high in minority groups. Nevertheless, American patients will live quality lives for decades, thanks to advances in medical research. Dozens of powerful and well-tolerated AIDS drugs will be developed, as will novel means to restore the immune system.
A cure for AIDS by the year 2025 is not inconceivable. But constrained by economic reality, these therapeutic advances will have only limited benefit outside the U.S. and Western Europe.
As a result of the epidemic of AIDS in Africa, ______.
选项
A、the life span for most of the people has been reduced by 40 years
B、most young people have been infected with human immunodeficiency virus
C、people will have to learn to live with the disease for over 50 years
D、the achievements made in preserving people’s health in the past will be wiped off
答案
D
解析
第四段第二句作者说:到2025年艾滋病将成为非洲年轻人的最大杀手,它可以使一些国家人口的平均寿命降到40岁,仅艾滋病一项就会使过去50年在公共健康方面取得的成就化为乌有。
转载请注明原文地址:https://kaotiyun.com/show/MThi777K
0
在职申硕(同等学力)英语
相关试题推荐
主要根据竞争地位和行业吸引力两类指标把企业的业务划分成九种类型,从而决定各类业务的发展方向和有效地分配其有限资源的分析方法是指()。
构成企业生存和发展的社会经济状况及国家的经济政策,包括社会经济结构,经济体制、宏观经济政策等要素,这是()。
We(cannothardly)expectadolescents(tohaverespect)forthepossessionsofothers(if)theyhavenohopeofattaininganyof
Thewriterappliedforthejobbecause______Thewriterthoughthewasoverqualifiedforthejobbecause
Nearlyeleventhousandpeoplehavebeenarrestedfordefyingthebanonstreettrading.
Inthispart,youareallowed30minutestowriteacompositionofnolessthan150wordson"TheIncreaseintheNumberofChin
Comparedwiththeircosmologist(宇宙学家)colleagues,cosmogonists(星源学家)cansoundalittleold-fashioned.EdgarAllenPoeturnedto
Meanwhile,Ialwayskeptintouchwithmyformerprofessoratcollege,byletterandtelephone.
Oneofthemostwidelydiscussedsubjectsthesedaysisenergycrisis.Automobiledriverscannotgetgasoline;homeownersmayno
A.weareallbookedupforFlight802onthatdayB.whataboutthefareC.I’dliketomakeareservationtoBostonnextweekAge
随机试题
能直接编程的梯形图必须符合顺序执行,即从________到________,从________到________地执行。
具有传送营养物质和代谢产物功能的结缔组织是
动物组织中的酶,其最适温度大多在
功能活血止痛,消肿生肌的药物是
处方中bid的中文含义是()
资产负债表是反映企业某一特定日期经营成果的静态会计报表。()
拒绝服务器攻击的后果是()。
在常见的文字处理软件中,为当前文档保存一个副本,可以选择命令(2),在正文中查找文字“计算机”,通常选择命令(3)。
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silent",thefilmhasneverbeen,inthefullsenseofth
Whatmakespeoplehappier:moneyorhavinghappyfriendsandneighbors?Researchersinanewstudyfindthatfriendsofhappype
最新回复
(
0
)