Question

英语必修三第一单元课文翻译第二个课文

英语必修三第一单元课文翻译第二个课文

Answer 1

HOW LIFE BEGAN ON THE EARTH No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions. After t。