21. (2007福建) -- You are always full of _______. Can you tell me the secret?
-- Taking plenty of exercise every day.
A. power B. strength C. force D. energy
答案：D
解析：energy, power, strength和force均可表示“力量”，但energy意为“能量”，尤指人在做某事并为完成该事所表现出的生机勃勃的力量，多用作不可数名词。You are always full of energy.表示“你总是经历充沛”。Power意为“能力”，词义丰富，可指内在的或外在的力量，还可指权利。Force意为“力量”，常指促使物体运动的力量，也可指势力、武力或暴力，可用作可数名词和不可数名词。Strength意为“体力”，常指人体或物体内存在的力量，如力气，是不可数名词。

22. (2007湖北) Despite such a big difference in _______ towards what one eats, there is no doubt that people in the west regard the Chinese food as something special.
A. point B. idea C. attitude D. sight
答案：C
解析：attitude“态度”，常与towards连用，表示“对……的态度”。表示人们在饮食方面的态度有很大不同。

23. (2007陕西) He and his wife are of the same _______; they both want their son to go to college.
A. soul B. spirit C. heart D. mind
答案：D
解析：mind“愿望，想法”。根据所提供的情景“they both want their son to go to college”可判断出，他和他的妻子有一个共同的愿望。

24. (2007天津) One thousand dollars a month is not a fortune but would help cover my living _______.
A. bills B. expenses C. prices D. charges
答案：B
解析：expense“(时间、精力、金钱等的)消耗，花销，费用”。根据上下文的“One thousand dollars a month”可判断出“一千美元虽然不是一大笔钱，但够生活之用”。

25. (2007辽宁) Health problems are closely connected with bad eating habits and a _______ of exercise.
A. limit B. lack C. need D. demand
答案：B
解析：lack“缺乏”。根据常识可判断出健康问题与不良饮食习惯和缺乏锻炼有关。