【题目】The term "healthy obesity" has gained value over the past 15 years,but scientists have recently questioned its very existence."Our new findings suggest that health measures may be necessary for all obese（肥胖的）individuals, even those previously considered to be metabolically（代谢的）healthy,"says study first author Mikael,"Since obesity is the major driver changing gene expression in fat cells,we should continue to focus on preventing obesity."
Obesity has been a global problem,affecting approximately 600 million people worldwide and increasing the risk of heart disease,stroke,cancer,and so on.But in the 1970s and 80s,experts began to question the extent to which obesity increases the risk for these disorders.Later studies in the late 90s and early 2000s showed that some obese people show a relatively healthy life.
However,there are no accepted measures for measuring metabolically healthy obesity,and whether or not such a thing exists is now up for discussion."Our study suggests that the idea of metabolically healthy obesity may be more difficult than thought,"Mikael says,"There doesn’t appear to be a clear line that separates obese subjects with high or low insulin（胰岛素）sensitivity,indicating that obesity is the major driver explaining the changes in gene expression."
One limitation of the study is that it examined gene expression only in white fat cells,not other types.Moreover, all of the obese subjects were scheduled to experience obesity operations,so the findings may only apply to people with severe obesity.In future research,Mikael and his group will track the study patients after surgery to determine whether weight loss normalizes gene expression responses.They will also look for specific genes linked to improved metabolic health in these people.
In the meantime,the study has an important take-home message."Obese people may not be as metabolically healthy as previously believed,"Ryden says.
【1】What does the underlined phrase "healthy obesity" mean?
A. It can be healthy with obesity.
B. Obesity is necessary to be healthy.
C. Unhealthy people have no obesity.
D. Health has something to do with obesity.
【2】What leads to healthy obesity failing to prove true?
A. Lack of related patients.
B. Lack of genetic evidence.
C. Lack of research funding.
D. Lack of needed standards.
【3】What advice can readers get from the passage?
A. People should have a healthy lifestyle.
B. People should accept obesity in a way.
C. People should keep a balanced weight.
D. People should avoid obesity operations.
【4】Which can best describe the author's intention in writing the passage?
A. Compare,analyze and conclude.
B. Show,appreciate,and persuade.
C. Introduce,argue and advertise.
D. Present,inform and inspire.
