阅读短文，从方框中选择适当的单词填空 (每词限用一次)。

population     dream      is      of     so     

Changqing has a long history but it is the new district of Jinan. It 小题1:_________ in the west of Jinan. and covers 1178 square kilometers. The 小题2:_________ of Changqing is about 530,000. It has convenient transportation 小题3:_________ it’s easy to get here. There are many ancient places of interest for you to visit, such as Lingyan Temple, Xiaotang Hill and so on. It has changed a lot since it became the new district of Jinan. Now it has 15 colleges or universities. You can make your 小题4:________come true there. And the Expo garden which was built newly attracts thousands小题5:_________visitors every year. Welcome to Changqing, and you will enjoy yourself.

某导演准备拍摄一部反映1949年共和国诞生的纪录片。其中，标志着“中国历史进入新纪元”可选的画面是

A．淮海战役

B．渡江战役

C．开国大典

D．三大改造