分类：教育/科学-外语学习-英语考试
问题：用and还是but?1.I'mastudent,___Iwant 
1. I'm a student, ___ I want to be a teacher.
2. I'm a bank clerk, ___ I want to be a policeman.
3. A policeman's job is interesting ____ kind of dangerous.
回答：1.and
2.but 
3.but