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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 wor

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

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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【C1】________by the World Health Organization in 41 years.
    The heightened alert【C2】________an emergency meeting with flu experts in Geneva that convened after a sharp rise in cases in Australia, and rising【C3】________in Britain, Japan, Chile and elsewhere.
    But the epidemic is "【C4】________" in severity, according to Margaret Chan, the organization’s director general,【C5】________the overwhelming majority of patients experiencing only mild symptoms and a full recovery, often in the【C6】________of any medical treatment.
    The outbreak came to global【C7】________in late April 2009, when Mexican authorities noticed an unusually large number of hospitalizations and deaths【C8】________healthy adults. As much of Mexico City shut down at the height of a panic, cases began to【C9】________in New York City, the southwestern United States and around the world.
    In the United States, new cases seemed to fade【C10】________warmer weather arrived. But in late September 2009, officials reported there was【C11】________flu activity in almost every state and that virtually all the【C12】________ tested are the new swine flu, also known as (A) H1N1, not seasonal flu. In the U.S., it has【C13】________more than one million people, and caused more than 600 deaths and more than 6,000 hospitalizations.
    Federal health officials【C14】________Tamiflu for children from the national stockpile and began【C15】________ orders from the states for the new swine flu vaccine. The new vaccine, which is different from the annual flu vaccine, is【C16】________ahead of expectations. More than three million doses were to be made available in early October 2009, though most of those【C17】________doses were of the FluMist nasal spray type, which is not 【C18】________for pregnant women, people over 50 or those with breathing difficulties, heart disease or several other【C19】________. But it was still possible to vaccinate people in other high-risk group: health care workers, people【C20】________infants and healthy young people.
【C10】
选项 A、as
B、if
C、unless
D、until
答案A
解析 本题考查上下文的逻辑关系。填空之前的原文信息是new cases seemed to fade(新的病例似乎在逐渐消失)，而填空之后的原文信息是warmer weather arrived(天气转暖)。请注意这里的arrived是过去时，即天气转暖是已经发生的事情，并且此前的“新的病例似乎在递减”也是过去时，即填空前后的信息都是发生了的事情。据此首先排除B项if(如果)和C项unless(除非)，因为这两个选项表达是条件关系，而条件关系是一种客观的情况，在时态上一般要使用现在时，而不是过去时。本填空的前后信息明显应该是时间关系，D项until(直到)表示的意思是“新的病例似乎在逐渐消失直到天气转暖”，而这就不符合本句和后句之间的But转折逻辑关系了，因为之后But引导的句子是说“在2009年9月末，官员报告说几乎在每个州都有流感活动”，既然 “新的病例似乎在递减直到天气转暖”，即天气转暖之后新病例就不再递减，这个信息与But引导的句子是构不成转折关系的。因此最佳答案是A项as(随着)，即“随着天气变暖，新的病例似乎在递减”，即这两者应该是时间上同时发生的。
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