【题目】Effective weight management requires a longterm ________ in order to lose weight for good.
A. establishment B. commitment C. tournament D. assessment
在线课程【答案】B
【解析】
考查名词辨析。A. establishment建立，成立；B. commitment投入，承诺，保证；献身；C. tournament锦标赛；D. assessment评估；句意：为了减肥，有效的体重管理需要长期的投入。根据句意可知B项正确。