1. (2023高二下·林芝期中)  阅读理解

A residential summer weight-loss camp improved fat children's health, a study about fat children's health reports. A Saint Louis University physician found the camp improved children's weight，body mass index (身体质量指数），physical fitness and blood pressure.

"When a child can communicate with others struggling with the same problem, it helps support his weight-loss effort, and he is more likely to improve both physically and psychologically,"said Nadim Kanafani, M. D. , corresponding author and assistant professor of pediatrics (小儿科）at Saint Louis University School of Medicine. 

According to Kanafani, fat children struggle with their body's awkwardness in running, jumping and playing,which causes them to stop taking part in these physical activities and make unhealthy lifestyle choices. This can be changed when fat children are placed together to focus on losing weight and improving physical fitness. 

Kanafani tracked fat 10- to 18-year-old adolescents who attended a weight-loss camp. They took part in physical activities and group educational self-esteem(自尊). During their stay,the kids ate three balanced meals and two snacks per day prepared under the supervision of a nutritionist. 

The results showed an average weight loss of more than eight pounds and average reduction in the BMI score of three points. Besides, participants' blood pressure dropped significantly and fitness levels improved.

The weight-loss camp in the study, Camp Jump Start, used a number of proven techniques to achieve modification of diet habits, increase physical activities and provide social support for participants. These methods resulted in health benefits as well as significant increases in self-esteem. Camp founder Jean Huelsing, who is a nurse, is the lead author on the paper. 

1. （1） The summer weight-loss camp improved the following EXCEPT____. 

   A . children's height B . body mass index C . physical fitness D . blood pressure
3. （2） What made the children in the camp more likely to improve their health?

   A . The guides' encouragement. B . Their parents' help. C . Their own plans to lose weight. D . Their communication with others with the same problem.
5. （3） Which age group of fat children did Kanafani track?

   A . 1 to 5 years old. B . 6 lo 10 years old. C . 8 to 12 years old. D . 10 to 18 years old.
7. （4） The underlined word in Paragraph 6 most probably means "____". 

   A . nature B . limit C . change D . success
9. （5） What is the main idea of the passage?

   A . Weight loss is the key to kids' mental health. B . Focusing on lifestyle changes is the key to kids' health. C . Obese and overweight children underestimate(低估）true weight. D . A summer weight-loss camp helps improve obese children's health.