In order to keep a healthy diet and minimize the risk of disease, its essential to eat a diet that consists of low fat foods and to maximize energy with carbohydrates. Beef, nuts, oils, and most dairy products are rich in fat, so you should eat less of those; while pastry, rice, potatoes, and bread contain almost no fat and are a high energy source of complex carbohydrates. You know that many food manufactures use sugar to make low fat or fat free foods taste good, but dont worry too much about that. You dont necessarily get fat by eating sugar, since sugar is an indirect fat.
When you exercise, carbohydrates are the first calories to burn, if you want to burn off fat, its good to do some sort of aerobic exercise such as biking, swimming, running, or fast walking. But you have to keep doing this exercise for at least twenty minutes because it takes about that long before we start to burn fat. And then the effect of burning fat decreases after forty-five minutes of exercise. So if you do some sort of aerobic exercise for three to four days a week for about thirty to forty minutes, youll have an affective schedule for reducing weight.
Questions 32 to 35 are based on the passage you have just heard.
32. What is the main topic of this talk?
【解析】选[D]。在听录音之前,预览选项可知本文与饮食习惯和锻炼有关。
33. According to the speaker, which will burn most quickly with exercise?
【2013年6月大学英语四级听力的考试模拟试题9】相关文章:
最新
2017-01-16
2016-10-21
2016-10-08
2016-10-08
2016-10-08
2016-10-08