浙江省永嘉县楠江中学高中英语必修三Unit4Astronomy：thescienceofthestarsreading学案.doc

第  PAGE 3 页 共  NUMPAGES 3 页 why was the earth different from other planets? It produced a lot of heat Water remained Water disappeared It was the oldest planet What is the main cause that life was able to develop on the earth but not on other planets? The earth bad a solid shape The earth did not have harmful gases in its atmosphere. Water stayed on the earth but not on other planets The earth was not too hot or too cold Why was it necessary for plants to grow before animals? Animals needed plants to protect them from the sun Plants provided oxygen for animals to breathe Animals could hide from bunters in the forest It was easier for plants to grow[来源:学。科。网] It can be inferred from the text that ______[来源:Zxxk.Com] After the Big Bang, what the dust was to become remained a mystery Plants appeared before the animals The plants multiplied and filled the oceans with oxygen Plants played an important part in the appearance of the animals II. Read the passage quickly and find the main idea. III. Read and analyze the structure. Para.1 Para.2 Para.3 Para.4 Para.5 （ ）1 Insects and amphibians appeared. （ ）2 Dinosaurs appeared. （ ）3 The earth became a solid ball. （ ）4 Small plants grew on the water. （ ）5 Reptiles appeared. （ ）6 Plants began to grow on dry land.[来源:学#科#网] （ ）7 The earth was a cloud of dust. （ ）8 Water appeared on the earth. （ ）9 Shellfish and other fish appeared.[来源:Zxxk.Com] （ ）10 The universe began with a “Big Bang”. （ ）11 Clever animals with hands and feet appeared. （ ）12 Mammals appeared.