“Long-term sleep loss is a serious public health problem among children,” said abstract author Hoi See Tsao, MD, FAAP. "Insufficient sleep among adolescent, for example, is associated with physical and mental health consequences including increased risk of depression and obesity and negative effects on mood, attention and academic performance.”

Dr. Tsao said, "Our research shows that children who get enough sleep are more likely to flourish(健康成长)in comparison to children with insufficient sleep."

Researchers analyzed responses from parents and caregivers of 49,050 children ranging in age from 6-17 years old in the combined 2016-2017 National Survey of Children's Health. They answered questions on how many hours of sleep a randomly selected child in their household slept on an average weeknight. For the study, sufficient sleep was defined as sleeping greater than or equal to 9 hours on an average weeknight.

The researchers found that sufficient sleep, was positively associated with several individual flourishing markers, as well as the combined childhood flourishing measure. The researchers also identified risk factors associated with insufficient sleep, which included lower levels of parental or caregiver education, the presence of mental health conditions and so on.

Dr. Tsao said the study strengthened the importance of increasing efforts to help children get the recommended amount of sleep for their age. “Interventions like these may help children demonstrate more measures of childhood flourishing, enhance their development and give them brighter futures, " she said.

【1】What does the second paragraph mainly talk about?

A.The harm of long-term lack of sleep.

B.The cause of long-term lack of sleep.

C.The way to improve sleep quality.

D.The advice against sleep loss.

【2】Who were questioned in the study according to the passage?

A.Children and parents.B.Researchers and caregivers.

C.Parents and researchers.D.Parents and caregivers.

【3】What can we know from the last paragraph?

A.Dr.Tsao denies the efforts

B.Dr. Tsao thinks highly the study.

C.New interventions can help children sleep

D.New interventions are of little importance.

【4】Where can we most probably read this test? .

A.In a science report.B.In a personal diary

C.In a travel magazine.D.In a geography textbook.

【答案】

【1】A

【2】D

【3】B

【4】A

【解析】

这是一篇说明文。文章主要说明了一项新研究表明，在美国，只有48%的学龄儿童在大多数工作日晚上睡9个小时。文章说明了儿童长期缺乏睡眠的危害、研究进行的过程以及相关人员对这项研究的态度。

【1】主旨大意题。根据第二段中“Long-term sleep loss is a serious public health problem among children,” said abstract author Hoi See Tsao, MD, FAAP.可知“长期睡眠不足是儿童中一个严重的公共健康问题，”论文摘要作者Hoi See Tsao博士说。结合后文主要列举了缺乏睡眠的一些具体危害，由此可知，第二段主要讲了长期缺乏睡眠的危害。故选A。

【2】细节理解题。根据第四段中Researchers analyzed responses from parents and caregivers of 49,050 children ranging in age from 6-17 years old in the combined 2016-2017 National Survey of Children's Health.可知，在2016-2017年全国儿童健康调查中，研究人员分析了49050名6到17岁儿童的父母和看护人的回答。由此可知，研究中询问了父母和看护人。故选D。

【3】推理判断题。根据最后一段中Dr. Tsao said the study strengthened the importance of increasing efforts to help children get the recommended amount of sleep for their age.可知，曹博士说，这项研究加强了努力帮助儿童获得与他们年龄相符的推荐睡眠量的重要性。由此可推知，Dr.Tsao对此研究评价非常高。故选B。

【4】推理判断题。根据第一段中Only 48% of school age children in the United States get 9 hours of sleep most weeknights, according to a new research being presented at the American Academy of Pediatrics ( AAP) 2019 National Conference & Exhibition in New Orleans.可知，根据美国儿科学会2019年在新奥尔良举行的全国会议和展览上公布的一项新研究，在美国，只有48%的学龄儿童在大多数工作日晚上睡9个小时。第一段中出现的according to new research以及下文多次出现的research、the study和researchers，由此推知，这是一篇科学研究报道。故选A。