阅读理解。

                                       What does the sign (标识) say?

1. What time does the university park open in March?

A. At 6: 00 am.

B. At 6: 30 am.

C. At 8:00 am.

D. At 8: 30 am.

2. Which sign tells you not to smoke?

A. Sign 2.

B. Sign 4.

C. Sign 6.

D. Sign 8.

3. Where can you see Sign 9?

A. On the playground.

B. At the school library.

C. Near the swimming pool.

D. In the computer room.

自次公开发行股票的持续督导的期间为股票上市当年利余时间及其后2个完整会计年度，自股票上市之日起计算。 ( )