2. 外语
  3. A. Scientists do not know exactly why Hepatitis develops. B. Hepatitis A often breaks out in filthy places where food and wa

A. Scientists do not know exactly why Hepatitis develops. B. Hepatitis A often breaks out in filthy places where food and wa

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问题 A. Scientists do not know exactly why Hepatitis develops.   
B. Hepatitis A often breaks out in filthy places where food and water are easily contaminated.   
C. Symptoms of hepatitis include languor, loss of appetite, distress of the stomach, and yellowness of urine.   
D. Hepatitis B is the best-known form of viral hepatitis.     
E. The chronic hepatitis lasts a long time and is most likely to recur.   
F. People should pay attention to public environment for the preservation of health.  
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选项
答案D
解析 见第六段，“Hepatitis C is usually spread by exposure to infected blood…It is also a common cause of chronic hepatitis．”丙肝通常是通过接受病毒污染的血液而传播的，受污染的血液为输血引发的肝炎和慢性肝炎最常见的原因。
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