A nationwide pursuit of a healthier lifestyle began when the American realized ______.

(单选题)Early results indicate that the government will be ______ to (单选题)She takes care of a class and is also ______ the administrat (单选题)At the beginning of the new term, all the students conscient (单选题)Both sides agreed to ______ on building this railway. (单选题)Britain is the only country in Europe that allows ______ to (单选题)Working mothers are used to ______ their jobs, their childre (单选题)The teacher training college ______ a plaque to the college’ (单选题)The areas under ______ contained major industrial areas. (单选题)He continued to place security ______ other objectives. (单选题)语音知识调练中，节奏常常是学习的难点。节奏包括长短音、连读、重音，其中（ ）定性作用。