阅读短文，从方框中选择适当的单词填空                                                                    

       Changqing has a long history but it is the new district of Jinan. It ____  in the west of Jinan. and covers 1178 square kilometers. The ____  of Changqing is about 530,000. It has convenient transportation ____  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 ____ come true there. And the Expo garden which was built newly attracts thousands____ visitors every year. Welcome to Changqing, and you will enjoy yourself.

先阅读后作答：根据几何图形的面积关系可以说明整式的乘法．例如：（2a+b）（a十b）=2a²+3ab+b²，就可以用图①的面积关系来说明．