阅读短文，选择正确的答案。

      There is a park near our school. Wecan see many trees and flowers there. Some flowers are red, and some areyellow. We can see a hill behind the park too. At the foot of the hill we cansee a river. There are some boats on it. Children like to go there. It is springnow. There are many children in the park. Some are walking and singing. Some aredancing and playing games. Ann and her sister Kate are flying a kite. Tom andhis brother Sam are throwing a frisbee(飞盘).Their father and mother are sitting under the tree. They are all happy.

The population of Shanghai _______ than _______ Ji'nan.

如图，一次函数y=k₁x+b₁的图象l₁与y=k₂x+b₂的图象l₂交于点A，则方程组$\left\{\begin{array}{c}y=k_{1}x+b_1\\ y=k_{2}x+b_2\end{array}\right.$的解是（　　）