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  3. Scientists around the world are racing to learn how to rapidly diagnose, treat and stop the spread of a new, deadly disease. SAR

Scientists around the world are racing to learn how to rapidly diagnose, treat and stop the spread of a new, deadly disease. SAR

admin2014-06-13  57
问题     Scientists around the world are racing to learn how to rapidly diagnose, treat and stop the spread of a new, deadly disease. SARS — Severe Acute Respiratory Syndrome — was【1】for the first time in February 2003 in Hanoi,【2】since then has infected more than 1,600 people in 15 countries, killing 63. At this【3】, there are more questions than answers surrounding the disease.
    Symptoms start【4】a fever over 100.4 degrees F, chills, headache or body【5】. Within a week, the patient has a dry cough, which might【6】to shortness of breath. In 10% to 200% of cases, patients require【7】ventilation to breathe. About 3.5% die from the disease. Symptoms【8】begin in two to seven days, but some reports suggest it【9】take as long as 10 days. Scientists are close to【10】a lab test to diagnose SARS. In the meantime, it is diagnosed by its symptoms. There is no evidence【11】antibiotics or anti-viral medicines help,【12】doctors can offer only supportive care. Patients with SARS are kept in isolation to reduce the risk of【13】. Scientists aren’t sure yet, but some researchers think it’s a【14】discovered coronavirus, the family of viruses that cause some common colds.
    Most cases appear to have been passed【15】droplets expelled when infected patients cough or sneeze. Family members of infected people and medical workers who care for them have been most likely to【16】the illness. But recent developments in Hong Kong suggest that the【17】might spread through air, or that the virus might【18】for two to three hours on doorknobs or other【19】Health experts say it is【20】, though, that sharing an elevator briefly with an infected person would be enough to pass the virus.  
选项 A、probably
B、obviously
C、unlikely
D、clearly
答案C
解析 逻辑衔接题。注意空格所在句的衔接词though表示前后有让步关系，上一句说明病毒停留在物体表面，人们通过接触而传染，既然是让步关系，那么本句要表达的意思是与患者同乘一电梯就会传染病毒还不太可能，所以选[C]。若选其他三项，则不符合上下文的逻辑关系。
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