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
Women may be infected by the HIV virus in a different way than men, according to a recent study release, suggesting it could be
Women may be infected by the HIV virus in a different way than men, according to a recent study release, suggesting it could be
admin
2013-06-02
59
问题
Women may be infected by the HIV virus in a different way than men, according to a recent study release, suggesting it could be even harder to develop a vaccine that would work well on women.
The findings, published in the journal nature, showed most women in the study initially were infected by multiple variants of the HIV virus while all of men initially wee infected by a single variant of the HIV virus.
Previous studies in the United States and Europe on how the HIV virus was transmitted focused mainly on men and led many to believe that only one variant of the virus was transmitted at the time of infection. The new study appeared to confirm that to be the case in men, but not in women.
Once infected by single or multiple variants of HIV, the virus replicates itself into even more genetic variants, making it difficult to develop a vaccine.
The ongoing study, led by the Fred Hutchinson Cancer Research Center of Seattle, is one of many aimed at better understanding the HIV virus in the belief that the best way to find a vaccine is to understand how the virus works.
The study tracked the sexual activity of hetero-sexual men and women in Kenya over more than four years, monitoring them for the presence of the HIV virus at intervals of about three months.
Of the 32 women infected, 20 were found to have been infected with multiple variants of the HIV virus. Further tests revealed each of the women was infected by a single partner, indicating they had contracted a variety of strains of HIV from one man, not several. Of the 10 men in the study who were infected, all were infected with a single variant of the HIV virus.
Like many medical studies, this one raises more questions than it answers. One question must be addressed is whether HIV infects women in a different way than men.
Students comparing how the virus behaves in men and women are becoming increasingly important as the number of women infected has risen.
The author’s attitude towards the developing of HIV vaccine is______.
选项
A、pessimistic
B、optimistic
C、positive
D、objective
答案
D
解析
观点态度题。从文章倒数第二段Like many medical studies,this one raises more questions than it answers.One question must be addressed is whether HIV infects women in a different way than men.我们可以看出,作者介绍了这份最近的研究,但这份研究并没有解决什么问题,相反却提出了新的问题。作者的态度很客观,到底能不能研制出疫苗,作者并没有提到。所以选项D为
转载请注明原文地址:https://kaotiyun.com/show/d1n7777K
0
大学英语六级
相关试题推荐
A、Becauseitwasmorenutritiousthanothertypeofbread.B、Becauseitdidnotrequireyeast.C、Becauseitstayedfreshforal
Wehaveseenwhatispossiblewhenwebuilduponourmutualinterests,andengage______(在互相尊重的基础上)
Noothercountryspendswhatwedopercapitaformedicalcare.Thecareavailableisamongthebesttechnically,evenifusedt
ToallAmericans,anotherbasic【B1】______intheirconstitutionistheBillofrights,adoptedin1971.Thisconsistsof10very
Theplaceofthechildinsocietyhasvariedforthousandsofyearsandhasbeenaffectedbydifferentculturesandreligions.I
A、Shedoesn’tlikethemovie.B、Shelikesthemovieverymuch.C、Shewantstostartbeforetherushhour.D、Shedoesn’tstartti
A、Hedidn’tbuyanythingwhileTommyboughtalot.B、Hegotsomemedicineforhishurtingfoot.C、Hetwistedhisfootandcouldn
Mountainclimbingisbecomingapopularsport,butitisalsoa【B1】_____dangerousone.Peoplecanfall;theymayalsobecomeil
Ingeneral,oursocietyisbecomingoneofgiantenterprisesdirectedbyabureaucraticmanagementinwhichmanbecomesasmall,
随机试题
A.维持正常循环B.药物治疗C.建立呼吸D.保持呼吸道通畅E.评价新生儿窒息复苏程序中步骤B是指
在特别潮湿的场所、导电良好的地面、锅炉或金属容器内工作的照明电源电压不得大于()。
某点的大地坐标为N39°、E116.5°,按照高斯投影3°带的分带投影,该点所在3°带号及其中央子午线经度为()。
学习所引起行为或行为潜能的变化是短暂的。(2014年下半年真题)
It’saroughworldoutthere.Stepoutsideandyoucouldbreakalegslippingonyourdoormat.Lightupthestoveandyoucould
假设某程序语言的文法如下:S→SaT|TT→TbR|RR→PdR|PP→fSg|e其中Vr={a,b,d,e,f,g};Vn={S,T,R,P};S是开始符号,那么,此文法是(43)文法。这种文法的语法分析通常采用优
AnswerQuestions71-80byreferringtothe4shortpassagesA,B,CandD.AnswereachquestionbychoosingA,B,CorDandmar
Forabouthowlonghasthecompanybeeninbusiness?
TimeManagementforCollegeStudentsTimeyouspentinhighschoolistotallydifferentfromthatincollege.Itisacritic
A、Themanisstillexpectingthenextepisode.B、Themanwillreschedulehistimetowatchthemovie.C、Thenextepisodewillbe
最新回复
(
0
)