Skimming: Which is the widely accepted theory? A: The universe had a beginning. B: The universe has existed forever. Find the main idea of each paragraph.
Skimming: Which is the widely accepted theory? A: The universe had a beginning. B: The universe has existed forever. The universe had a beginning. The Big Bang The universe began with
Skimming: Find the main idea of each paragraph. Para 1 Para 2 Para 3 Para 4 Para 5 The formation of the ________ The importance of__________ The development of________ and _________ The arrival of__________ and their ___________ on the earth universe earth water plants animals humans influence the formation of the earth the development of life Part One Part Two
a cloud of _____ Big Bang a solid _______ slowly combine the earth cooled down it exploded loudly with _____ and _____ _______ the earths ___________ dust globe fire rock atmosphere Part One ( Para 13) Listening water Detailed reading 1 What were to make the earths atmosphere? (Para 2) Carbon, nitrogen, water vapour and other gases. 2. Why is water important for life to develop? (Para 3) It allowed the earth to dissolve harmful gases and acids into the oceans and seas. This produced a chain reaction, which made it possible for life to develop.
Part Two ( Para 45) Scanning 1 Insects and amphibians appeared. 2 Dinosaurs appeared. 3 Small plants grew on the water. 4 Reptiles appeared. 5 Green plants began to grow on land. 6 Water appeared on the earth. 7 Shellfish and other fish appeared. 8 Clever animals with hands and feet appeared. 9 Mammals appeared. Detailed reading 1.Why was it necessary for plants to grow before animals? (Para 4) Plants provided oxygen for animals to breathe. 2. What problem is caused by human beings? (Para 5) They cause global warming.