23.There is another _____________ (相似點(diǎn)) between China and Rome.

22. During the same period, there was much c___________ and fighting between the groups of people who ruled the different parts of China.

21. In 753 BC, the city of Rome was founded, and in 509 BC, it became a r____________.

20. A national m___________ was built in Pear Harbor just above the remains of the sunk battleship Arizona.

19. The next day, US President Franklin Roosevelt d______________ war against Japan.

18.Pear Harbor is one of the m___________ military bases of the United States.

17.Jack is a concerned c__________(市民).

16. Most of them were in good c____________.

15. We saw pieces of material, bones, w_________ cups and leather bags.

14. We went through a 10-meter-long p____________ and we found ourselves in a large burial chamber.