問(wèn)題補(bǔ)充：
單選題
Schools that serve healthier food, offer nutrition education and reward students for good eating habits can make a major______in preventing childhood obesity.A.mistakeB.senseC.impressionD.difference
網(wǎng)友答案：
熱心網(wǎng)友 1樓
D解析本題考查名詞。make a difference 有區(qū)別，有影響，起作用。根據(jù)句意選D。
