今天前程百利小编为大家分享的是托福听力的背景材料-体重不能忽视。大家都知道托福听力段子都来源于美国学生的大学校园生活，所以无处不透漏着美式思维。那么小编就为大家整理原汁原味的美式的背景材料为大家的听力备考助力。
原文：
A survey of nearly 5,000 13- to 15-year-olds in the U.K. found that 40 percent of overweight and obese teens did not self-identify as “too heavy.” Cynthia Graber reports
Obesity increases your risk for heart disease and stroke, diabetes, and even forms of cancer. So it’s probably a good idea to get in the habit of eating right and exercising while you’re still young. But teens get mixed messages about what’s a healthy body weight. They’re bombarded with unrealistic images of ultraskinny celebrities and models, while also seeing media coverage of obesity that includes photos of those who are exceptionally obese.
So a group of researchers in the U.K. wanted to know, do British teens have an accurate sense of where they fall along the weight scale?
They examined data from nearly 5,000 13- to 15-year-olds collected between 2005 and 2012 by what’s called the Health Survey for England. Of the group, nearly three-quarters were normal weight. Twenty percent were overweight, with seven percent obese.
The survey included asked this question for that age group: “Given your age and height, would you say that you are about the right weight, too heavy, or too light?”
Despite the thin-celebrity-saturated culture, 83 percent of normal weight adolescents thought they were, in fact, a healthy weight. Not surprisingly, the data changed by gender, 11 percent of normal-weight girls thought they were too heavy, compared to just four percent of boys.
But the bad news: nearly forty percent of the overweight and obese teens did not self-identify as “too heavy.” Overweight girls recognized the issue more than boys did—nearly half the boys did not think that they were too heavy. The study is in the International Journal of Obesity.
The researchers say the data on overweight teens, particularly boys, “may have implications for the future health and wellbeing of young people,” and that overweight teens are substantially more likely to become overweight adults. Recognizing that there’s a lack of awareness among some teens could be a first step toward a healthier future.
疑难词汇：
self-identify自我认同;自我认定
bombarded with连续提出;用…轰击
exceptionally 异常的
obese 肥胖的;过敏的
saturated adj. 饱和的;渗透的;深颜色的
v. 使渗透，使饱和(saturate的过去式
wellbeing n. 幸福;福利;安乐
长难句解析：
1.They’re bombarded with unrealistic images of ultraskinny celebrities and models, while also seeing media coverage of obesity that includes photos of those who are exceptionally obese.
难句类型：
While引导的时间状语
句子主干：
They’re bombarded with unrealistic images
难句拆分：
while also seeing media coverage of obesity that includes photos of those who are exceptionally obese，While引导的时间状语，侧重前后两句话的同时发生。
2. Recognizing that there’s a lack of awareness among some teens could be a first step toward a healthier future.
难句类型：
That引导的宾语从句
句子主干：
Recognizing could be a first step toward a healthier future.
难句拆分：
that there’s a lack of awareness among some teens，that引导的宾语从句作recognize的宾语。
文本结构特点：
本篇文章主要讲的是经研究发现40%的青少年儿童，体重过于肥胖应该引起我们的注意。在日常生活中，人们所认为的肥胖症就是那些特别胖的图片，这就导致了有些人认识不到自己的肥胖，所以为了青少年的健康应该时刻重视他们的体重。
好了，以上就是前程百利小编为大家整理的备考托福听力背景材料以及专业词汇的学习。希望能在备考托福的路上助大家一臂之力。最后，小编祝大家在托福考试中取得好成绩!
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