对下列句子加点的词语解释不恰当的一组是

sig Chinese kung fu can not only ________ one’s strength, but also develop one’s character.

Everyone says you are a good student.You never fall asleep in class — .

Hard work and lack of sleep have _____ her beauty and youth in recent years.

(安徽省马鞍山市2009届高三第一次教学质量检测)If you arethe thunderstorm,you’d better stay in the low-lying areas