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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

admin2010-01-16  6
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 【31】______ for the first time in February 2003 in Hanoi, 【32】______ since then has infected more than 1,600 people in 15 countries, killing 63. At this 【33】______ , there are more questions than answers surrounding the disease. Symptoms start 【34】______ a fever over 100.4 degrees F, chills, headache or body 【35】______. Within a week, the patient has a dry cough, which might 【36】______ to shortness of breath. In 10% to 20% of cases, patients require 【37】______ ventilation to breathe. About 3.5% die from the disease. Symptoms 【38】______ begin in two to seven days, but some reports suggest it 【39】______ take as long as 10 days. Scientists are close to 【40】______ a lab test to diagnose SARS. In the meantime, it is diagnosed by its symptoms. There is no evidence 【41】______ antibiotics or anti-viral medicines help, 【42】______ doctors can offer only supportive care. Patients with SARS are kept in isolation to reduce the risk of 【43】______ . Scientists aren’t sure yet, but some researchers think it’s a 【44】______ discovered corona virus, the family of viruses that cause some common colds. Most cases appear to have been passed 【45】______ droplets expelled when infected patients cough or sneeze. Family members of infected people and medical workers who care 【46】______ them have been most likely to 【47】______ the illness. But recent developments in Hong Kong suggest that the 【48】______ might spread through air, or that the virus might 【49】______ for two to three hours on doorknobs or other 【50】______ . Health experts say it is unlikely, though, that sharing an elevator briefly with an infected person would be enough to pass the virus.
选项 A、detected
B、caught
C、disclosed
D、revealed
答案A
解析 本文介绍了SARS的起源、传播、症状、病因、诊断和治疗。SARS全称严重急性呼吸综合症。一些研究者认为它是一种新型的冠状病毒，与引起普通感冒的病毒同属一个家族。SARS以发热、干咳、胸闷为主要症状，严重者会出现快速进展的呼吸系统衰竭。SARS有极强的传染性，SARS病毒通过患者咳嗽或打喷嚏中的微粒传播。目前，还没有发现确有疗效的抗生素或抗病毒药物，医生只能为病人提供辅助治疗。

本题考查语义线索、词义辨析。detect：(利用仪器或某种手段)发现、察觉。catch (SARS)得病，染病；disclose揭发、泄露(秘密等)；reveal揭示、显露(状态或情感)。该句意为SARS第一次被发现(be detected)是在2003年2月。
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