首页
登录
职称英语
Smallpox was the first widespread disease to be eliminated by human interven
Smallpox was the first widespread disease to be eliminated by human interven
游客
2023-12-27
14
管理
问题
Smallpox was the first widespread disease to be eliminated by human intervention. A highly contagious viral disease, it was endemic in Europe, causing the death of millions of people until the development of vaccination by Edward Jenner around 1800. In many non- European nations, it remained a dreaded, often fatal illness until very recently.
In May 1966, the World Health Organization (WHO), an agency of the United Nations, was authorized to initiate a global campaign to eradicate smallpox. The goal was to eliminate the disease in one decade. At the time, the disease posed a serious threat to people in thirty nations. More than 700 physicians, nurses, scientists, and other personnel from WHO joined about 200,000 health workers in the infected nations to battle the disease. Because similar projects for malaria and yellow fever had failed, few believed that smallpox could actually be eradicated, but eleven years after the initial organization of the campaign, no cases were reported in the field.
The strategy was not only to provide mass vaccinations but also to isolate patients with active smallpox in order to contain the spread of the disease and to break the chain of human transmission. Rewards for reporting smallpox assisted in motivating the public to aid health workers. One by one, each smallpox victim was sought out, removed from contact with others and treated. At the same time, the entire village where the victim had lived was vaccinated.
By April 1978, WHO officials announced that they had isolated the last known case of the disease, but health workers continued to search for new cases for two additional years to be completely sure. In May 1980, a formal statement was made to the global community. Today smallpox is no longer a threat to humanity. Routine vaccinations have been stopped worldwide. [br] The word "they" underlined in Paragraph 4 refers to ______ .
选项
A、health workers
B、officials
C、victims
D、cases
答案
B
解析
词义题型见第四段第一句:By April 1978,WHO officials announced that they had isolated the last known case of the disease.根据句子结构判断,they指的是前面提到的WHO officials,因此B为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3310961.html
相关试题推荐
Lackofpropernourishmentreducestheirpowerto______disease.A、assistB、resist
Computer________willbecomemorewidespreadasmoreschoolsaddcomputerclasses
[originaltext]Thereisawidespreadassumptionthatworkgetsharderafter
[originaltext]Thereisawidespreadassumptionthatworkgetsharderafter
[originaltext]Thereisawidespreadassumptionthatworkgetsharderafter
[originaltext]Thereisawidespreadassumptionthatworkgetsharderafter
[originaltext]Thereisawidespreadassumptionthatworkgetsharderafter
[originaltext]Chronicdiseasesaretheleadingcauseofdeathintheworld.
[originaltext]Chronicdiseasesaretheleadingcauseofdeathintheworld.
DarkChocolateDarkchocolateisknowntohelppreventheartdisease,butea
随机试题
Whatdohobbieshaveaccordingtothespeaker?Undoubtedlyhobbieshave______.[
哪一型甲状腺癌常合并内分泌综合征()A.甲状腺髓样癌 B.甲状腺鳞
债券评级的主要等级标准有()。 Ⅰ.A级债券 Ⅱ.B级债券 Ⅲ.C
男、女两名田径运动员在长110米的斜坡上练习跑步(坡顶为A,坡底为B)。两人同时
根据下列资料回答问题。 2008年1至3月份,福建沿海地区与台湾地区海上客运直
阅读下面材料。 “学生罢课半月,政府不惟不理,且对待日益严厉。乃商界罢市不及
理财师在收邮件时应注意下列哪些事项?()A、限制每天处理邮件的次数 B、尽量避
下列理财目标中属于短期目标的是()。A:子女教育储蓄B:按揭买房C:退休D
全口义齿基托的唇颊侧边缘应是A.越厚越好,固位力强 B.越薄越好,舒适 C.
女性,48岁,近1个月感口渴,饮水量增至每天2000ml。身高156cm,体重
最新回复
(
0
)