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
49
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.
【F4】
选项
答案
有时,即使疫苗中含有的病菌是弱化了的菌种,人体也接受不了,而这就会导致免疫系统失效,以致病人的死亡。
解析
转载请注明原文地址:https://kaotiyun.com/show/15K4777K
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
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
LatelyScanSoftwareSimplyflippingthroughabookmaynotseemlikethebestwaytoscanit,butaJapaneseresearchgroup
FinancialTurmoilintheWorldCausesaSocialHazardDespiteadropinmetropolitanWashington’sjoblessrate,regionaleco
TechnicalKnowledgeandExpertiseNeededtheJobManketAscollegesanduniversitiessendanotherwaveofgraduatesoutinto
TechnicalKnowledgeandExpertiseNeededtheJobManketAscollegesanduniversitiessendanotherwaveofgraduatesoutinto
NewChangesinAcademicJournelPublishingItusedtobesostraightforward.Ateamofresearchersworkingtogetherinthel
随机试题
从迁移的角度看,“温故而知新"属于()。
窒息时的呼吸兴奋药是()。
A.仰靠坐位B.仰卧位C.站立位D.侧卧位E.俯卧位针刺头面、胸腹部及四肢部的部分腧穴宜选
肠上皮细胞由肠腔吸收葡萄糖属于
根据我国的现行规定,应做经济费用效益分析的项目包括()。
关于民事纠纷和解的说法,正确的是()。
拉丁帝国
《唐律疏议.名例律》规定:“诸五品以上妾,犯非十恶者,流罪以下,听以赎论。”【疏】议曰:“五品以上之官,是为‘通贵’。妾之犯罪,不可配决。若犯非十恶,流罪以下,听用赎论;其赎条内不合赎者.亦不在赎限。若妾自有子孙及取余亲荫者,假非十恶,听依赎
Theyhavegivenupthehopetosavetheirfriendfromdrowning.
Weconsider______heshouldhaveleftwithouttellinganyonebeforehand.
最新回复
(
0
)