2. 外语
  3. Most computer users have symptoms of CVS because of ______. According m the passage, social anxiety disorder is probably becaus

Most computer users have symptoms of CVS because of ______. According m the passage, social anxiety disorder is probably becaus

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问题 Most computer users have symptoms of CVS because of ______.
According m the passage, social anxiety disorder is probably because of a combination of ______.
选项
答案environmental and hereditary factors。
解析 根据题干信息词social anxiety disorder is probably和combination定位到最后一段倒数第三句，文章提到social anxiety disorder的起因还不确定，但很可能是环境和遗传因素的共同作用才导致这种疾病，故答案为environmental and hereditary factors。
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大学英语六级

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