If someone is sleepwalking, they are walking around while they are asleep. Sleepwalking happens when a person is not fully aslee

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问题    If someone is sleepwalking, they are walking around while they are asleep. Sleepwalking happens when a person is not fully asleep but not quite awake. Usually we move from our deepest level of sleep to a lighter level and stay there. Sleepwalkers come right up to wake levels but do not fully awaken. It is at this time that they get up and walk.
   The longer a person stays in deep sleep, the more time it takes for the sleep to be broken. That opens up the possibility of being awakened (but not fully) and of sleepwalking.
   Sleepwalking happens more often among young people than grown-ups because young people usually have more deep sleep. Up to 7% of 5 to 12-year-olds sleepwalk, while only about 2% of grown-ups sleepwalk. We get less deep sleep as we are getting older and the possibility of sleepwalking is also reduced.
   Sleepwalking may run in families, too. If one of your parents was a sleepwalker, you have about a 50% possibility of also being a sleepwalker.
People have more possibility of developing sleepwalk______.

选项 A、when they get older
B、when they become parents themselves
C、if their parents sleep walked
D、if they don’t sleep well

答案C

解析 根据文章最后一句可知,如果你的父母有一方是梦游症患者,那么你患梦游症的概率为50%,这比正常人要高很多,所以选项C正确。根据第三段最后一句“…we are getting older and the possibility of sleepwalking is also reduced.”可知,选项A错误;B、D两项并未在文中提及。故选C。
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本试题收录于: 英语题库普高专升本分类
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