根据材料一，材料二，某校九年级一班召开了以“爱我家乡美”为主题的活动，请你参与完成下列任务。

材料一：党的十八大首次提出建设美丽中国，党的十八届五中全会提出的五大发展理念是：创新、协调、绿色、开放、共享。

材料二：在2017年两会政府工作报告中，***代表国务院布置了2017年重点工作任务，其中谈到：“加快改善生态环境特别是空气质量，市人民群众的迫切愿望，是可持续发展的内在要求。”

阅读下面短文，按照句子于结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空

    It's a Sunday morning. Jack and his father ____ on a big bus. There are many people on it. Some of them come from America and some from England and ____ (Australian). They are all friends. They are going to the Safari Zoo. ____ Chinese are on the bus. One is a man. He is the ____  (drive). He is driving the bus. The other is a young woman. She is good at ____ (speak) English. She is talking ____ the zoo. She says she likes ____ （panda）best. Because they are cute and only ____ in China. All the passengers(乘客)are listening to her. They like the zoo. It ____ them 20 minutes to get there. They want ____ (get) there soon（很快）.

关于粒子和宇宙，下列说法正确的是（　　）