第15题: [单项选择]Only through diplomatic means ______. A. a formal agreement can be reached B. can a formal agreement be reached C. can be a formal agreement reached D. can be reached a formal agreement 参考答案:B 答案解析:[注释] 本题为倒装句型语法考点。only一词放在句首起强调作用,其主句助动词与主语应颠倒位置。
第16题: [单项选择]有配伍禁忌的药物 A. 虫蛀 B. 霉变 C. 酸败 D. 挥发 E. 沉淀 参考答案:A