单项选择题
A．a degree which is the highest in science B．a person who works in the lab C．the post in science D．someone whose job is to make sick people well again
A．Pardon B．Thank you C．Excuse me D．Yes, thanks a lot
A．Confidence is more important than modesty. B．How to accept compliments given by westerners. C．The Chinese people are modest while westerners are confident. D．About the western culture.