精选优质文档-倾情为你奉上Unit 4 system 系统，体系 solar system 太阳系 government systems 政府体系interest vt. 使感兴趣常用：Sth. interest Sb. interested adj. 感兴趣的 interesting adj. 令人感兴趣的eg: What he said interested all of us. We are interested in the interesting story.1. 根据一个普遍接受的理论，宇宙起源于一次大爆炸，这次大爆炸把物质射向四面八方。 （背过）a widely accepted theory, the universe started with. throw matter in all directions.世界上独一无二的东西，前面加定冠词the, 例如：the sun, the moon, the earth, the university, the wo
