阅读理解 According to a new study, putting preschooler(学龄前儿童) in bed by 8 p.m. could reduce their chan

阅读理解  
According to a new study, putting preschooler(学龄前儿童) in bed by 8 p.m. could reduce their chances of becoming overweight or obese later in life by half. Preschoolers are children around the age of 4 or 5.
The World Health Organization says obesity can lead to serious long-term health problems like diabetes, heart disease and stroke.
Researchers from the Ohio State University’s College of Public Health have found that young children who go to bed after 9 p.m. are twice as likely to be obese later in life. The researchers wrote their findings in The Journal of Pediatrics.
The lead author of the study is Sarah Anderson. She is a professor of epidemiology(流行病学). Anderson says that, for parents, the results of the study support the importance of creating a bedtime routine.
She says that having a usual bedtime routine is something “families can do to lower their children’s risk” of becoming overweight.
Researchers used data from 977 children for the study. These children are part of a larger project called the Study of Early Child Care and Youth Development. The project follows healthy babies born in 1991 in 10 cities in US.
When these children turned 15 years old, the researchers looked at their rates of obesity. Of those with the earliest bedtimes, only one out of 10 was obese. Of those who went to bed between 8 and 9 p.m., 16 percent became obese. And out of those with the latest bedtimes, 23 percent became obese.
The World Health Organization reported in 2014 that the number of overweight babies and young children worldwide had increased from 31 million in 1990 to 44 million in 2012. If that trend continues, the WHO warns, there will be 70 million obese children in the world by 2025.
4. According to the passage, the risk of obesity ______.
A. can be cut by half if children go to bed by 9 p.m.
B. can lead to low blood pressure, diabetes and heart disease
C. is the highest at the age of 4 or 5
D. is higher for those children who sleep late at night
5. The underlined word “obese” in the first paragraph means ______.
A. heavy B. light C. fat D. slim
6. Which of the following statements is TRUE about the research?
A. The research is organized by the World Health Organization.
B. The result shows that children sleeping before 8 p.m. have the lowest rate of obesity.
C. The findings are based on the data provided by The Journal of Pediatrics.
D. The research is funded(提供资金) by the Study of Early Child Care and Youth Development.
7. What is the author’s attitude towards the result of the research?
A. Objective(客观) B. Disappointed C. Positive D. Satisfied
【答案】4. D    5. C    6. B    7. A
【解析】