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
When a disease of epidemic proportions rips into the populace, scientists immediately get to work, trying to locate the source o
When a disease of epidemic proportions rips into the populace, scientists immediately get to work, trying to locate the source o
admin
2019-08-01
9
问题
When a disease of epidemic proportions rips into the populace, scientists immediately get to work, trying to locate the source of the affliction and find ways to combat it. Oftentimes, success is achieved, as medical science is able to isolate the parasite, germ or cell that causes the problem and to find ways to effectively kill or contain it. In the most serious of cases, in which the entire population of a region or country may be at grave risk, it is deemed necessary to protect the entire population through vaccination, so as to safeguard lives and ensure that the disease will not spread.
The process of vaccination allows the patient’s body to develop immunity to the virus or disease so that, if it is encountered, one can fight it off naturally. To accomplish this, a small weak or dead strain of the disease is actually injected into the patient in a controlled environment, so that his body’s immune system can learn to fight the invader properly. Information on how to penetrate the disease’s defenses is transmitted to all elements of the patient’s immune system in a process that occurs naturally, in which genetic information is passed from cell to cell. This makes sure that, should the patient later come into contact with the real problem, his body is well equipped and trained to deal with it, having already done so before.
There are dangers inherent in the process, however. On occasion, even the weakened version of the disease contained in the vaccine proves too much for the body to handle, resulting in the immune system succumbing, and, therefore, the patient’s death. Such is the case of the smallpox vaccine, designed to eradicate the smallpox epidemic that nearly wiped out the entire Native American population and killed massive numbers of settlers. Approximately one in 10,000 people who receives the vaccine contracts the smallpox disease from the vaccine itself and dies from it. Thus, if the entire population of the United States were to receive the Smallpox Vaccine today, 3,000 Americans would be left dead.
Fortunately, the smallpox virus was considered eradicated in the early 1970s, ending the mandatory vaccination of all babies in America. In the event of a reintroduction of the disease, however, mandatory vaccinations may resume, resulting in more unexpected deaths from vaccination.
The process, which is truly a blessing, may indeed hide some hidden curses.
The best title for this text would be______.
选项
A、The Smallpox Vaccine: An Analysis
B、How Vaccines Work
C、Vaccines: Methods and Implications
D、A Warning on the Negative Side Effects of Vaccines
答案
C
解析
属主旨思想题。文章第一段最后一句指出:接种疫苗可以用来保护全部人口,控制疾病蔓延。第二段介绍了接种疫苗的过程、方法;第三段指出了一些危险因素;最后一段总结上文,再次强调接种疫苗的重要意义。由此可知,选项C正确。选项A、B、D都是文中细节,不能概括全文。
转载请注明原文地址:https://kaotiyun.com/show/sn2Z777K
0
考研英语一
相关试题推荐
IfIaskyouwhatconstitutes"bad"eating,thekindthatleadstoobesityandavarietyofconnecteddiseases,you’relikelyto
IfIaskyouwhatconstitutes"bad"eating,thekindthatleadstoobesityandavarietyofconnecteddiseases,you’relikelyto
IfIaskyouwhatconstitutes"bad"eating,thekindthatleadstoobesityandavarietyofconnecteddiseases,you’relikelyto
AnonymityisnotsomethingwhichwasinventedwiththeInternet.Anonymityandpseudonymityhasoccurredthroughouthistory.For
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopedachecklistofstressfulevents.Theyappreciatedthe
Thestudentsaidtherewereafewpointsintheessayhe______impossibletocomprehend.
Biographiescanbewearisomecontrivances,oftentoolongandtoodetailedfortheirowngood.Biographersmakethemistakeofs
______Iwasverymuchmistaken,therewassomethingwrongwithLouise.
随机试题
具体说明下列各字是综合运用哪些笔画组合方式构成的?
男性,52岁,发现阴囊肿块半年,手术切除见附睾肿块,直径1.5cm,褐色,结节样,镜下可见血管数量增多,呈裂隙状,梭形细胞束紧密交叉排列,细胞无明显异型性。免疫组化SMA、Desmin、Vimentin阳性。免疫组化染色时,对于该病最具诊断参考价值的是
企业持有的下列固定资产不需计提折旧的有()。
下列哪部图书被誉为“中国17世纪的工艺百科全书”?()
中国的节日有很强的内聚力和广泛地包容性,这与我们民族源远流长的悠久历史一脉相承,是一份宝贵的精神文化遗产,而与近代历史相关的纪念日更是如此,让我们翻开2015年日历,一起去探索纪念日背后的历史。中国传统历史往往以60年为一“甲子”来循环纪年,2014
孟子说:“生于忧患,死于安乐"。就是说,艰苦的生活环境能够_______一个人的坚强意志,激励他不断地进取;而安逸的生活则很容易_______一个人,使他_______其中走向颓废乃至于最后的灭亡。
将7个大小相同的橘子分给4个小朋友,要求每个小朋友至少得到1个橘子,一共有几种分配方法?()
许多种蜘蛛都会随着它们所附着的花的颜色而改变颜色。不像人类,被那些蜘蛛捕食的昆虫拥有敏锐的颜色鉴别力,可以分辨出这种伪装。这说明,蜘蛛颜色改变对它们本身的用处在于躲避自己的天敌。以下哪项如果为真,最能支持上述论证?
抗战时期,中国共产党的工作重心,是在敌后发动抗日游击战争,建设抗日民主根据地。同时,也在国民党统治区开展抗日民主运动和进步文化工作。在国民党统治区开展抗日民主运动和进步文化工作的重大意义在于
函数z=f(x,y)=在(0,0)点()
最新回复
(
0
)