| 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 {{U}}threat{{/U}} 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 f A. debate B. humiliation C. risk D. bother 热门试题:[判断题]CRH2型动车组Ｍ车、Ｔ车的基础制动均采用空电变换的増圧汽缸和液压卡钳装置。（ ）
A.正确 B.错误 [判断题]摩擦式提升机在各种载荷及提升状态下安全制动时，钢丝绳都不得出现滑动。
A.正确 B.错误 [多选题] 省、自治区、直辖市人民政府规定由税务机关征收社会保险费的社会保险经办机构应当及时向税务机关提供缴费单位()的情况。
A. 欠费情况 B. 社会保险登记 C. 变更登记 D. 注销登记 E. 缴费申报 [判断题]3.377.
太阳能直流发电系统包括电池、逆变器。 A.正确 B.错误 [简答题]剂量、用法不正确，单次处方总量不符合规定
[单项选择]Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and began to look around.
One of his friends saw him in the street outside his house, and said to him, " Hello, Nasreddin, what are you looking for" "My ring , "answered Nasreddin. "It fell off my finger. It is a silver(银的)ring with a red stone in it." "Oh, yes. "said the friend. "I remember it. I will help you to look for it. Where did you lose it" "In my shed." "But why don’t you look for it there" "Don’t be foolish! It is quite dark in my shed, how can I find my ring there Here there is light from the lamps in the street./ Nasreddin thought he could find his ring because ______. A. his friend would help him B. it was dark in the shed C. it was bright outside [单选题]引起食物中毒的残余食物应在煮沸15分钟后()。
A.食用 B.销毁 C.存入冰箱 D.存入库房 [单项选择]某土石方工程，工程量为20m2，单位用量及单价见下表：
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