2. 医学
  3. Some hepatitis viruses are spread by fecal-oral______often by food handlers and in crowded, unsanitary conditions.

Some hepatitis viruses are spread by fecal-oral______often by food handlers and in crowded, unsanitary conditions.

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问题 Some hepatitis viruses are spread by fecal-oral______often by food handlers and in crowded, unsanitary conditions.
选项 A、contact
B、contamination
C、pollution
D、touch
答案B
解析 选项A为“(传染病)接触，接触”；选项B为“污染，污物”；选项C为“污染”，常用于环境污染、大气污染等；选项D为“摸，碰，触觉”。根据题意，此处应填入的词语需含有“污染，污物”之意，故选B。
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