题目

The politician has been warned that he would be getting into great trouble______stick to his standpoint. A. were he to        B. he will  C. he was to         D. would he 答案：A 解析: 表示对将来情况的虚拟，条件从句的形式是：should + 动词原形；were to + 动词原形或一般过去时态。把if去掉，应使用倒装形式，故答案为A。下列药品和装置合理且能完成相应实验的是（　　）A．      制备氢氧化亚铁B． 验证非金属性Cl＞C＞SiC． 检验二氧化硫中是否混有二氧化碳D．实验室制取并收集氨气