In America, most people don’t get enough sleep. Children aged 5 to 12 are advised to sleep

In America, most people don’t get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can’t sleep that long. A study found that about 41 million American workers got less than six hours of sleep every night. Scientists worry that parents are passing their bad sleeping habits down to their children.
In the study, Reut Gruber and some other scientists either added or reduced on hour of sleep for healthy children aged 7 to 11. They watched the children for five nights. They wanted to know if the amount of sleep can affect a child’s behavior.
Before the study began, students were asked to sleep the same amount of hours as usual. Their teachers were asked to record their behavior. After five nights of the records, scientists found that those who slept one hour less behaved worse than those who slept one hour more. Students with less sleep were more likely to feel sad and had more problems paying attention.
The scientists chose to study children in their homes instead of in a laboratory, because they wanted to find out how everyday changes might affect children’s behavior at school. “In the study, nobody became a talent, and nobody became crazy. But small changes in children can really make a big difference,” says Gruber.
【小题1】 Scientists worry that may cause children to sleep less.A．too much homework B．pressure from parentsC．TV and computer games D．parents’ bad sleeping habits【小题2】 Scientists did the new study in order to know .A．why children can’t get enough sleepB．how long children should sleep every nightC．what children like to do before they go to sleepD．if the amount of sleep can affect a child’s behavior【小题3】 Who helped do some new study, children with less sleep .A．Teachers. B．Parents. C．Scientists. D．Psychologists.【小题4】According to the new study, children with less sleep .A．were more likely to feel excited B．were more active in playing gamesC．had more problems paying attention D．didn’t want to answer questions in class【小题5】The new study was done in .A．a laboratory B．a classroomC．a children’s club D．the children’s homesD

(答案→)D 解析：这篇短文主要介绍了科学家们通过研究想知道睡眠时间是否能影响孩子的行为。通过研究发现睡眠更少的学生更容易感到悲伤有更多的问题要关注【小题1】细节理解题。根据短文第一段Scientists worry that parents are passing their bad sleeping habits down to their children.描述科学家担心父母给他们的孩子传递不良睡眠习惯。故选D【小题2】细节理解题。根据第二段They wanted to know if the amount of sleep can affect a child’s behavior.描述，他们想知道的睡眠时间是否能影响孩子的行为，故选D【小题3】推理判断题。根据第三段Their teachers were asked to record their behavior他们的老师被要求记录他们的行为，可以推断老师帮助做研究。故选A.【小题4】细节理解题。根据第三段Students with less sleep were more likely to feel sad and had more problems paying attention.睡眠更少的学生更容易感到悲伤有更多的问题要关注。故选C【小题5】归纳理解题。根据第四段The scientists chose to study children in their homes instead of in a laboratory,可知试验是在孩子的家中进行的，故选D

感谢回答，我学习了