英语四级考试CET听力试题练习.docx

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1、 英语四级考试CET听力试题练习 Early Bedtime for Young Children Could Cut Obesity Risk 早睡有助于削减儿童肥胖风险 For VOA Learning English, this is the Health Lifestyle report. Getting a good nights sleep tonight could guard children against weight gain in the future. According to a new study, putting preschoolers in bed by 8

2、 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 term obese refers to calculations of your Body Mass Index, what doctors call BMI. They use a persons height, weight and age to assess their amount of body f

3、at. BMIs help tell whether a person is underweight, normal, overweight or obese. 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 Universitys College of Public Health have found that youn

4、g 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 an associate professor ofepidemiology. She studies how diseases spread and how they can be co

5、ntrolled. 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 childs risk” of becoming overweight. A usual, early bedtime, Anderson adds, “is also lik

6、ely to have positive benefits on behavior and on social, emotional and cognitive development. 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

7、 in 10 U.S. cities. The children were 4 years old when their mothers reported their usual weekday bedtime. Researchers then divided the children into three groups: those who went to bed by 8 p.m. or earlier, those who went to bed between 8 p.m. and 9 p.m. and those whose bedtimes were after 9 p.m. W

8、hen 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. And

9、erson said putting children in bed early does not mean they will immediately fall asleep. But, she adds, it makes it more likely that children will get the amount of sleep they need to be at their best.” But Anderson says it is important to understand that having early bedtimes may be harder for som

10、e families than others. She says that, “families have many competing demands and there are trade-offs that get made.” For example, she says, if some parents work late, that can push the childrens bedtimes to later in the evening. Is childhood obesity a worldwide problem? Obesity among children in th

11、e United States is a major health concern. About 17 percent of children and teenagers in the U.S. are considered obese. That is according to the Centers for Disease Control and Prevention. The World Health Organization reported in 2023 that the number of overweight babies and young children worldwid

12、e had increased from 31 million in 1990 to 44 million in 2023. If that trend continues, the WHO warns, there will be 70 million obese children in the world by 2025. Im Anna Matteo. _ Words in This Story preschool - n. a school for very young children obese - adj. fat in a way that is unhealthy asses

13、s - v. to make a judgment about (something) epidemiology - n. the study of how disease spreads and can be controlled routine - n. a regular way of doing things in a particular order cognitive - adj. of, relating to, or involving conscious mental activities data - n. facts or information used usually to calculate, analyze, or plan something 【英语四级考试CET听力试题练习】