There is a new park near Andy’s home. It’s fine today. Andy and his family are in the park now. On their left, there is a café. On their right, there is a big lake. There are many flowers and trees around the lake. There’s a small hill behind the lake. Near the lake, there are two signs. One says, “Don’t swim in the lake!” The other says, “No fishing!” But you can go boating on the lake. There is a beautiful garden in the middle of the park. There are green grass and beautiful flowers in it. There are some small shops between the lake and the garden. The park is so nice. Andy and his family like it very much.

下列语句中,标点符号使用不正确的一项是（    ）

启动实施下图漫画政策（ 　 ）

①依据是我国的基本国情 
②说明计划生育政策已经不合适宜了 
③为实现中华民族伟大复兴的中国梦创造良好的人口环境 
④有利于保持合理的劳动力规模，延缓人口老龄化速度