A：　Come in ,come in ,what can I do for you ?

B：　Professor Donald,are you giving your advanced geology course again next semester?

A：　Yes ,I am applying on it .

B：　I wonder if I could enroll in it.I know it is a graduate course and I 'm a junior,but ....

A：　Aren't you a bit young?I have a lot of qualified seniors to take the course and they usually have a hard time keeping up .

B：　I know,but geology of the American west is my major interest and I have done a large reading in the field.

A：　Well ,if you think you are ready,I'll let you enroll.

B：　Oh ,thanks ,professor Donald.this is very nice of you.