【答案解析】[听力原文]
Overweight People Have Lower Risk of Death
New research shows that overweight or even mildly obese people/have a lower risk of early death/than people considered to be of normal weight. /Researchers examined the results of 97 studies. /Most of the studies were less than 10 years old. /They included almost three million adults from around the world. /Researchers found that people/who are considered overweight or slightly obese/were five to six percent less likely to die from all causes/than people of normal weight. /People with higher obesity ratings, /however, had almost a 30 percent greater risk of death/compared to normal-weight individuals. /The study has raised new questions about "body mass index," or BMI. /This is a measurement of body fat as a ratio of height to weight. /BMI guidelines were used as a basis for the study.
[解析] 这篇听写有一定的难度，主要介绍了超重及稍微有些肥胖的人比体重正常的人早期死亡的风险要低。只要掌握了。overweight，obese，lower risk of early death等关键词，就能很好地理解全文。介绍科学研究时一般都会使用数据说明，要注意其表达方式：five to six percent less...than...，30 percent greater...compared to...，a ratio of...to...。此外，缩略词BMI要大写，normal-weight两个单词之间有连字符，这些拼写的细节可能会被有些考生忽视。