简述教师教育者角色的特点。
参考答案：
第一：教师行为的道德性。
第二、教师行为的规范性。
第三、教师行为的抽象性和模糊性。
第四、教师行为的自律性。
— Did you visit the famous museum?
— No. We _____ it, but we spent too much time shopping. [ ]
A. could have visited
B. must have visited
C. can't have visited
D. shouldn't have visited
胰岛素依赖型糖尿病，合用口服降糖药时，最好选用（）
A.优降糖
B.甲苯磺丁脲
C.氯磺丙脲
D.乙酰磺环己脲
E.降糖片
