It's so calorie-dense that it's very difficult for average people to burn off all the calories they consume in a day when sugar is a major com______ of their diet.
【单选题】听力原文:M: Come in Emily and take a seat. F: Thanks. M: So, where do we start? Should we begin with a look at last year and then go on from there? F: Fine. M: So, how do you feel you've done in your firs...