1, A. Han Wang Chong's "On Heng Ding Xian": "Confucius is not a monarch, but his career is in the Spring and Autumn Period."

2、b .

3. A. Prisoner's original intention: a prisoner trapped under the steps.

4. Answer. In Nanyang and Xiangyang dialects, you zi, you tiao, you tiao and you tiao refer to people who are experienced, sophisticated and glib.

5. A. The master was supposed to be the master on the East Road. At that time, Zheng was in the east of Qin State, receiving the envoys of Qin State to the East, so he was called "the host". Later, "host" refers to the host who receives or entertains guests, or refers to the person who treats guests.