The universe began from the big bang
The universe began from the Big Bang
Unit 4 How Life Began on the Earth
Unit 4 How Life Began on the Earth
Paragraph 1: A widely accepted theory about the formation of the universe Paragraph 2: The formation of the earth Paragraph 3: The importance of water for life Paragraph 4: The development of plants and animals on the earth Paragraph 5: The arrival of humans and their impact on the earth
Paragraph 1: A widely accepted theory about the formation of the universe Paragraph 2: The formation of the earth Paragraph 3: The importance of water for life Paragraph 4: The development of plants and animals on the earth Paragraph 5: The arrival of humans and their impact on the earth
Reading Comprehension 1. Who knows how life began on the earth exactly A. Scientists B. Astronomers No one D. Aliens(外星人) 2. What does“ small clever animals” refer to A. Insects B. Reptiles C Dinosaurs. Humans
Reading Comprehension 1. Who knows how life began on the earth exactly? A. Scientists. B. Astronomers. C. No one. D. Aliens (外星人). 2. What does “small clever animals” refer to? A. Insects. B. Reptiles. C. Dinosaurs. D. Humans
3. The earth was different from the other planets in that Aa cloud of dust was around the earth B. comfortable climate remained on the ear water remained on the earth D. carbon remained on the earth
3. The earth was different from the other planets in that__________. A. a cloud of dust was around the earth B. comfortable climate remained on the earth C. water remained on the earth D. carbon remained on the earth