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
For several years,scientists have been testing a substance called interferon (干扰素),.a potential wonder drug that is proving to b
For several years,scientists have been testing a substance called interferon (干扰素),.a potential wonder drug that is proving to b
admin
2012-06-18
45
问题
For several years,scientists have been testing a substance called interferon (干扰素),.a potential wonder drug that is proving to be effective in treating a variety of ailments,including virus infections,bacteria infections,and tumors. To date,the new drug has provoked no negative reaction of sufficient significance to discourage its use. But in spite of its success, last year only one gram Was produced in the entire world.
The reason for the scarcity lies in the structure of interferon. A species of specific protein,the interferon produced from one animal species cannot be used in treating another animal species. In other words, to treat human beings,only interferon produced by human beings may be used. The drug is produced by infecting white blood cells with a virus. Fortunately,it is so powerful that the amount given each patient per injection is very small.
Unlike antibiotics, interferon does not attack germs directly. Instead,it makes unaffected cells resistant to infection,and prevents the multiplication of viruses within cells.
As you might conclude,one of the most dramatic uses of interferon has been in the treatment of cancer. Dr. Hans Strander,research physician at Sweden’s famous Karolinska Institute,has treated more than one hundred cancer patients with the new drug. Among a group of selected patients who has undergone surgical procedures for advanced cancer, half were given interferon. The survival rate over a three-year period was 70 percent among those who were treated with interferon as compared with only 10 to 30 percent among those who have received the conventional treatments.
In the United States,a large-scale project supported by the American Cancer Society is now underway. If the experiment is successful, interferon could become one of the greatest medical discoveries of our time.
Which of the following is TRUE of the results of Dr. Strander’s experiments?
选项
A、Both interferon and conventional treatments should be used to ensure the survival of the patients.
B、At the end of three years,only ten to thirty percent of the patients who had not received interferon died.
C、Only the patients who received interferon survived.
D、Most of the patients who were treated with interferon survived.
答案
D
解析
推理题。本题的解题思路同9题。由上题中D项的分析,及原文提及的“The survival rate over athree-year period was 70 percent among those...”可知,使用干扰素治疗的大部分患者存活了。所以正确答案是D选项。
转载请注明原文地址:https://kaotiyun.com/show/aMnO777K
0
考博英语
相关试题推荐
Anunderstandingoftheall-importantroleofinvestmentflowsshouldliberatetradepolicyfromits______focusonthecurrent
Histalentformusicremainedlatentuntilhiswifeboughthimaguitar.
Despitetheirmanydifferencesoftemperamentandofliteraryperspective,Emerson,Thoreau,Hawthorne,Melville,andWhitmansh
71.Battlesarelikemarriages.Theyhaveacertainfundamentalexperiencetheyshareincommon.Theydifferinfinitely,butstil
AttheKyotoconferenceonglobalwarminginDecember1997,itbecameabundantlyclearhowcomplexithasbecometoworkoutint
TheresultonSaturdayislikelyto______whetherindependentsandDemocratsturnoutinnumbersforMr.McCain.
Inolddays,whenaglimpseofstockingwaslookeduponassomethingfartooshockingtodistracttheseriousworkofanoffice,
Hisofficeis______tothePresident’s;itusuallytakeshimaboutthreeminutestogetthere.
Heseemedreluctanttosendhistroopsinanefforttodiscouragethe______peasants.
Thedamagetohiscarwas______;therefore,hecouldrepairithimself.
随机试题
主动脉关闭不全的病因有
患者,男,65岁,高血压20余年,因与他人争吵,突然出现头痛、呕吐、言语不清,之后神志不清。体检:左侧瞳孔8mm,右侧3mm,血压180/100mmHg,呼吸16次/分,脉搏54次/分。头颅CT显示一侧基底内囊区高密度影。目前首先应采取的措施是
工料单价法与综合单价法的主要区别是( )。
以下关于投资和理财关系的说法中,正确的有( )。Ⅰ.投资和理财的目标不同Ⅱ.投资和理财的结果不同Ⅲ.投资和理财分析、安排、实施的依据不同Ⅳ.理财就是投资,投资就是理财
预测某一类股票前景良好,那么就增加它在投资组合中的权重,且一般高于它在标准普尔500种股票指数中的权重;如果某类股票前景不妙,那么就降低它在投资组合中的权重,属于消极的股票风格管理。( )
下列不属于社会和文化环境的是()。
职工参加工伤保险的,由用人单位和劳动者共同缴纳工伤保险费。()
××区教育局关于“两个请示”的批复×发[××××]×号××学校:你校《关于办学规划和专业设置的请示》和《关于要求增加编制的请示》收悉。现经我局认真研究,作出如下批复:根据教育局《普通中等专业学校设置暂行办法》和你校办学条
《中华人民共和国专利法》第24条规定:“申请专利的发明创造在申请日以前6个月内,有下列情形之一的,不丧失新颖性:(一)在中国政府主办或者承认的国际展览会上首次展出的;(二)在规定的学术会议或者技术会议上首次发表的;(三)他人未经申请人同意而泄露其内容的。”
进程存在的标志是【】。
最新回复
(
0
)