首页
登录
职称英语
It has become a cliche among doctors who deal with AIDS that the only way t
It has become a cliche among doctors who deal with AIDS that the only way t
游客
2023-08-31
11
管理
问题
It has become a cliche among doctors who deal with AIDS that the only way to stop the epidemic is to develop a vaccine against HIV, the virus that causes it. Unfortunately, there is no sign of such a thing becoming available soon. The best hope was withdrawn from trials just over a year ago amid fears that it might actually be making things worse. As a result, vaccine researchers have mostly gone back to the drawing board of basic research. Meanwhile, the virus marches on. Last year, according to UNAIDS, the international body charged with combating it, 2.7 million people were in fected, bringing the estimated total to 33 million.
Reuben Granich and his colleagues at the World Health Organization (WHO), though, have been exploring an alternative approach. Instead of a vaccine, they wonder, as they write in The Lancet, whether the job might be done with drugs.
In the spread of any contagious disease, each act of infection has two parties, one who already has the disease and one who does not. Vaccination works by treating the uninfected individual prophylactically (预防地). Since it is" impossible to say in advance who might be exposed, that means vaccinating everybody. The alternative, as Dr. Granich observes, is to treat the infected individual and thus stop him being infectious. For this to curb an epidemic would require an enormous public-health campaign of the sort used to promote vaccination. But that campaign would be of a different kind. It would have to identify all (or, at least, almost all) of those infected. It would then have to persuade them to undergo not a short, simple vaccination course, but rather a drug regime that would continue indefinitely.
The first question to ask of such an approach is, could it work in principle? It is this that Dr. Granich and his colleagues have tried to answer. Using data from several African countries, they have constructed a computer model to test the idea. In their ideal world, everyone over the age of 15 would volunteer for testing once a year. If found to be infected, they would be put immediately onto a course of what are known as first-line antiretroviral drugs (ARVs). These are reasonably cheap, often generic, pharmaceuticals (医药品) that, although they do not cure someone, do lower the level of the virus in his body to the extent that he suffers no symptoms. They also -- and this is the point of the study -- reduce the level enough to make him unlikely to pass the virus on. For the 3% or so of people per year for whom the first-line ARVs do not work, more expensive second-line treatments would be used. [br] We can infer from the word "ideal" in the last paragraph that ______.
选项
A、researchers’ design is too unrealistic
B、everyone dreams an ideal world they can test
C、people over 15 receiving tests once a year is just what researchers conceived
D、it is impossible for everyone over 15 to test once a year
答案
C
解析
语义理解题。定位句指的是Dr. Granich和其同事们的实验设想,即每个人在15岁以后每年都会自愿接受一次检查,但是现实生活中这个设想并不一定能得到实施,C 符合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/2972603.html
相关试题推荐
[originaltext](33)Londonhasbecomeacyclefriendlyzoneafterthelaunch
Britain’sredphoneboxeshavebecomeoutofdateintheageofthemobile.
Britain’sredphoneboxeshavebecomeoutofdateintheageofthemobile.
Britain’sredphoneboxeshavebecomeoutofdateintheageofthemobile.
Britain’sredphoneboxeshavebecomeoutofdateintheageofthemobile.
Britain’sredphoneboxeshavebecomeoutofdateintheageofthemobile.
Britain’sredphoneboxeshavebecomeoutofdateintheageofthemobile.
IthasbecomedistinctiveoftheChannel’sproducts______(凭借其广泛的使用和良好的口碑).byvir
[originaltext]Yogabecomesverypopularnowadays,butitisimportantthat
[originaltext]Yogabecomesverypopularnowadays,butitisimportantthat
随机试题
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehaving
软件文档可分为用户文档和(),其中用户文档主要播过(作答此空)和使用户流。A.
糖尿病患者膳食平衡中蛋白质能量不要多于总能量的()。A.15% B.10%
下列各项中不属于统计行政法规的有()。A.《中华人民共和国统计法实施细则
王女士拟从市场上购买某种证券作为长期投资,目前市场可供选择的证券有:(1)甲公司
在讲授《素描》一课时,高老师先给学生讲述了什么是素描,然后让学生从老师带来的众多
复合地基的增强体穿越了粉质黏土、淤泥质土、粉砂三层土,当水泥掺量不变时,下列哪些
一般地,人的( )在中年之后有下降的趋势A.晶体智力 B.模仿能力 C.创
商业银行在向客户提供理财顾问服务的基础上,接受客户的委托和授权,按照与客户事先
关于无形资产的摊销,下列说法中正确的有()。A.企业获得勘探开采黄金的特许权,且
最新回复
(
0
)