高考英语词汇复习——透过语境巧记高考英语3500词（第十四天）Word版含答案.doc

高考英语词汇复习——透过语境巧记高考英语3500词（第十四天） 第十四篇
The Origin of Life
It is a fact that each religion and culture has its own ideas how life began on earth. However, there is a widely accepted theory telling us that universe began with “Big Bang”. After that, the earth was just a cloud of dust floating everywhere. About 3.8-4.5 billion years ago, the dust settled into a solid globe, which is a planet belonging to the solar system. The earth became violent and exploded with fire and rocks, producing carbon d