问题补充：
What is the main reason of being overweight?What is the main reason of being overweight?A.Too much nutrition.B.Lack of physical exercise.C.Too much sleeping time.D.A and B.
答案：
所有答案逻辑都是通顺的,关键是看你文章上下文出现的提示是什么.
======以下答案可供参考======
供参考答案1:
eating
供参考答案2:
运动少，摄入量多，消耗量少
供参考答案3:
c供参考答案4:
There is no single answer to this question as far as im concerned there are number different factors that all play a role in being overweight. For instance ; An imbalance between energy intake and output is influenced by metabolic and genetic factors as well as behaviors affecting dietary intake and physical activity.There are also environmental, cultural, and socioeconomic components which have been shown to play a role in overweight, obese and morbidly obese problems. The most common associations for being overweight are consuming (eating) too much food and not being active enough. This imbalance results in a positive caloric state. Thus, if more calories are eaten than your body burns up, the extra calories are converted to fat and stored in the body as a precious fuel reserve. This positive energy imbalance over a long period of time is what is believed to be one of the major factors contributing to the weight problems of today and tomorrow. Remember, everyone has some stored fat.
