Zhao Yan: Look at this photo, Wang Ying.

Wang Ying: Oh, I remember. It was Liu Ning, you and I that were at the gym. It was rainy that day. We went to the gym to watch Lin Dan play badminton. He played with a player of Australia. We yelled for Lin Dan. He played very hard. Finally he won. We were happy. We jumped up and down.

⑴Zhao Yan, Liu Ning and Wang Ying ____      A. happy.

⑵They watched ____                          B. won.

⑶Lin Dan played with ____                    C. were at the gym.

⑷Lin Dan ____                                D. a player of Australia.

⑸We were ____                               E. a badminton game.

已知圆O：x²+y²=4和圆C：x²+（y﹣4）²=1．

（Ⅰ）判断圆O和圆C的位置关系；

（Ⅱ）过圆C的圆心C作圆O的切线l，求切线l的方程；

创新是引领发展的第一动力。必须把创新摆在国家发展全局的核心位置，不断推进理论创新、制度创新、科技创新、文化创新等各方面创新，着力提高发展的质量和效益。坚持创新发展是基于（    ）