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  3. The outbreak of swine flu that was first detected in Mexico was declared a global epidemic on June 11 , 2009. It is the first wo

The outbreak of swine flu that was first detected in Mexico was declared a global epidemic on June 11 , 2009. It is the first wo

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问题     The outbreak of swine flu that was first detected in Mexico was declared a global epidemic on June 11 , 2009. It is the first worldwide epidemic【B1】______by the World Health Organization in 41 years.
    The heightened alert【B2】______an emergency meeting with flu experts in Geneva that assembled after a sharp rise in cases in Australia, and rising【B3】______in Britain, Japan, Chile and elsewhere.
    But the epidemic is"【B4】______"in severity, according to Margaret Chan, the organization’s director general ,【B5】______the overwhelming majority of patients experiencing only mild symptoms and a full recovery, often in the【B6】______of any medical treatment.
    The outbreak came to global【B7】______in late April 2009, when Mexican authorities noted an unusually large number of hospitalizations and deaths【B8】______healthy adults. As much of Mexico City shut down at the height of a panic, cases began to【B9】______in New York City, the southwestern United States and around the world.
    In the United States, new cases seemed to fade【B10】______warmer weather arrived. But in late September 2009, officials reported there was【B11】______flu activity in almost every state and that virtually all the【B12】______tested are the new swine flu, also known as (A) H1N1 , not seasonal flu. In the U. S. , it has【B13】______more than one million people, and caused more than 600 deaths and more than 6, 000 hospitalizations.
    Federal health officials【B14】______Tamiflu for children from the national stockpile and began【B15】______orders from the slates for the new swine flu vaccine. The new vaccine, which is different from the annual flu vaccine, is【B16】______ahead of expectations. More than three million doses were to be made available in early October 2009, though most of those【B17】______doses were of the FluMist nasal spray type, which is not【B18】______for pregnant women, people over 50 or those with breathing difficulties, heart disease or several other【B19】______. But it was still possible to vaccinate people in other high-risk groups; health care workers, people【B20】______infants and healthy young people.
【B12】
选项 A、categories
B、examples
C、patterns
D、samples
答案D
解析 本题考查考生的词义辨析能力。本题题眼后有过去分词tested作后置定语修饰，此句指几乎所有被检测的都是一种新的猪流感，或称甲流，所以此处填入的应该是在医疗场景中使用的词汇。选项[A]categories表示“种类，范畴”，选项[B]examples表示“实例；榜样”，选项[C]patterns表示“模式；典范”，选项[D]samples表示“(医学、科学或调查用的)样本，试样”，故选项[D]为正确答案。
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