第5题: [单项选择]Grace ______ tears when she heard the sad news. A. broke in B. broke into C. broke off D. broke through 参考答案:B 答案解析:break in,闯入,强行进入,打断,插嘴:break into tears,突然哭起来;break off,突然停止,暂停:break through,突破。
第15题: [单项选择]John doesn't believe in ______ medicine; he has some remedies of his own. A. standard B. regular C. routine D. conventional 参考答案:D 答案解析:[题意]约翰不相信常规药物,他有自己的偏方。
[解析]与后一分句中的some remedies of his own相对的是conventional medicine,故[D]conventi