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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  53
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、process
B、advance
C、progress
D、convert
答案C
解析 语义衔接题。观察上下文，上文的a dry cough与下文的shortness of breath在表示疾病的程度上，有明显的先后关系。根据常识，由干咳到呼吸短促，是疾病恶化的一个症状。那么，现在需要的，就是一个能表示“恶化”意思的词。选项中，[B]advance“发展，向前”和[C]progress“发展，进步”可以表示“发展”。而[B]advance多表示“进步”，属于积极意义，疾病恶化显然不能用advance来说明，故只能选[C]progress。
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