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
【F1】When a disease of epidemic proportions rips into the populace, scientists immediately get to work, trying to locate the sour
【F1】When a disease of epidemic proportions rips into the populace, scientists immediately get to work, trying to locate the sour
admin
2014-10-27
177
问题
【F1】
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 finds 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.
【F2】
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 ward 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.【F3】
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.【F4】
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.
【F5】
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 1 in 10, 000 people who receives the vaccine contract 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 1970’s, ending the mandatory vaccination of all babies in America. In the event of a re-introduction of the disease, however, mandatory vaccinations may resume, resulting in more unexpected deaths from vaccination. The process, which is truly a mixed blessing, may indeed hide some hidden curses.
【F2】
选项
答案
接种疫苗是让人体对病毒或疾病产生免疫力。万一碰上病毒或疾病,人体可以自然战胜它。
解析
转载请注明原文地址:https://kaotiyun.com/show/h5K4777K
0
考研英语一
相关试题推荐
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
FinancialTurmoilintheWorldCausesaSocialHazardDespiteadropinmetropolitanWashington’sjoblessrate,regionaleco
TechnicalKnowledgeandExpertiseNeededtheJobManketAscollegesanduniversitiessendanotherwaveofgraduatesoutinto
TechnicalKnowledgeandExpertiseNeededtheJobManketAscollegesanduniversitiessendanotherwaveofgraduatesoutinto
Studythefollowingdrawingcarefullyandwriteanessayin"whichyoushould1)describethedrawing,2)analyzethepurposeo
WritealettertoMr.TerryThompson,recommendingaChineseuniversityforhimtostudyinChina.Youshouldwriteabout100w
Accordingtotheauthor,anidealmarriagelife______.Intheauthor’sopinion,adivorceisnotanevilact______.
随机试题
当结石嵌顿于胆总管下端时可引起【】
屈原作品《九章》之名最早见于【】
下列哪项不是涩脉的主病
实行建设项目法人责任制的项目,项目董事会需要负责的工作是()。
支架模板,脚手架支搭完成后,必须经()后,方可交付使用。
某分部工程双代号网络计划如下图所示,其作图错误包括()。
关于投保人免缴保费保险,下列说法不正确的是( )。
设α=(1,0,-1)T,A=ααT,求|aE-An|.
A、I’mreadytoseethatcouple.B、I’malreadymarried.C、Ihavetworeferencesnow.D、Ihaverefereeswhoareprepared.C
A、Hehurthiskneewhenatallladderfellonhim.B、Heinjuredhisanklewhenhefellfromaladder.C、Hetwistedhisbackwhen
最新回复
(
0
)