As ________ teacher, you ought to set _____good example to your

As ________ teacher, you ought to set _____good example to your students.
A、the; a
B、a; a
C、a; the
D、/; the
【正确答案】：B
【题目解析】：考查冠词用法。teacher和example都是可数名词，都应用冠词修饰。此处它们都不是特指，所以都用不定冠词。