【单选题】What is the theme of unit 1?
A.
How to live a simple life.
B.
How to live an eco-friendly life.
C.
How to live a self-sufficient life.
D.
How to live a convenient life.
【单选题】秦统一中国后,在中原地区逐渐形成了以( )为主体的各族民间音乐相融合的音乐中心
【判断题】( )机器人已添加外部轴,当机器人自身轴运动指令和外部轴运动指令相邻时,机器人自身轴和外部轴不会同时动作。
【判断题】The theme of Unit 1 is about the business of college.