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
124
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
Cultureshockmightbecalledan【C1】______diseaseofpeoplewhohavebeensuddenly【C2】______abroad.Likemostailments,ithasi
Cultureshockmightbecalledan【C1】______diseaseofpeoplewhohavebeensuddenly【C2】______abroad.Likemostailments,ithasi
Cultureshockmightbecalledan【C1】______diseaseofpeoplewhohavebeensuddenly【C2】______abroad.Likemostailments,ithasi
Cultureshockmightbecalledan【C1】______diseaseofpeoplewhohavebeensuddenly【C2】______abroad.Likemostailments,ithasi
Cultureshockmightbecalledan【C1】______diseaseofpeoplewhohavebeensuddenly【C2】______abroad.Likemostailments,ithasi
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
Itdoesn’tmatterwhichroomafamilychoosesto【C1】______in.It【C2】______beafavoritecomerofthekitchen,orawoodpanelled
______beforeweleavethedayaftertomorrow,weshouldhaveawonderfultimetogether.
LimitedScienceandTechnologyicalAdvancementofAducationWhenitcomestousingtechnologytofostereducation,thepreva
Studythefollowingdrawingcarefullyandwriteanessayin"whichyoushould1)describethedrawing,2)analyzethepurposeo
随机试题
可燃液体的蒸汽与空气混合后,遇到明火而引起瞬间燃烧,液体能发生燃烧的最低温度,称为该液体的()。
如果一个完全具有放射性的双链DNA分子在无放射性标记溶液中经过两轮复制,产生的四个DNA分子的放射性情况是
按十二经脉流注次序,胃经上接
患者,男,67岁,因冠心病入院,在静脉输液过程中出现腹泻,呼吸困难,咳嗽,咳粉红色泡沫痰。此时,护士应为患者采取的卧位
城市人均绿化规划指标的确定,由()部门确定。
甲建筑公司是某施工项目的施工总承包单位,乙建筑公司是其分包单位。2008年5月5日,乙建筑公司的施工项目发生了生产安全事故,应由()向负有安全生产监督管理职责的部门报告。
甲向乙购买价值25万元的汽车一辆。双方约定:甲先交付10万元,乙即将车交付甲,其余款项由甲分三次付清,乙保留汽车所有权至甲付清全部车款之时。收到甲交付的10万元车款后,乙将车交付甲,但未办理车辆过户登记。在甲付清全部车款前,乙又以30万元的价格将该车卖给不
我国目前的专门法院有
设函数f(x)在[a,b]上连续,在(a,b)内可导,且f(A)=f(b)=0.求证:存在ξ∈(a,b),使f(ξ)+ξf’(ξ)=0;
Managementoperatesthroughvarious______,oftenclassifiedasplanningorganleading/motivatingandcontrolling.(中国人民大学2010年试题
最新回复
(
0
)