高中英語 Unit 4 第一學時 Reading and Comprehension課件 新人教版必修3

英語英語必修必修3(人教版人教版)第一學時第一學時 Reading and ComprehensionTask 1快速閱讀課文快速閱讀課文“How life began on the earth”，以約，以約30詞寫出文章的段落大意。詞寫出文章的段落大意。溫馨提示：溫馨提示：本文是科普文本文是科普文，屬于說明文的范疇屬于說明文的范疇，寫摘寫摘要時要抓住文章要說明的主要問題：地球上生命起源要時要抓住文章要說明的主要問題：地球上生命起源的幾個主要階段。的幾個主要階段。語語 篇篇理理 解解_語語 篇篇理理 解解答案：答案：The passage explains how life began on the earth.After the earth exploded and produced water whose continued presence made it possible for life to develop, plants and animals including human beings appeared on the earth.Task 2語語 篇篇理理 解解 根據(jù)課文根據(jù)課文“How life began on the earth”，選擇正確，選擇正確答案。答案。1From Paragraph 1 we can know that stars are created from_Aair Batoms Crocks DiceB2What does the word “they” refer to in the sentences “It exploded loudly with fire and rock.They were in time to produce carbon, nitrogen，water vapour and.” in Paragraph 2?APlanets. BStars.CGases. DFire and rock.語語 篇篇理理 解解D3Which is the right order of the development of life?ASmall clever animalsshellfishdinosaursmammals.BShellfishdinosaurssmall clever animalsmammals.語語 篇篇理理 解解CCShellfishdinosaursmammalssmall clever animals.DDinosaursshellfishmammalssmall clever animals.語語 篇篇理理 解解4Why were mammals different from other life forms?AThey gave birth to young baby animals and produced milk to feed them.BThey produced young generally by laying eggs.CThey were able to live on land as well as in the water.DThey live on grass.A語語 篇篇理理 解解5What problem is caused by human beings? AThey exist everywhere on the earth.BThey cause global warming.CThey find new methods of growing crops. DThey enjoy hunting and fishing.語語 篇篇理理 解解BTask 3語語 篇篇理理 解解InsectsAmphibiansReptilesDinosaursMammals including3_WaterLand animalshuman beingsTask 4根據(jù)課文根據(jù)課文“How life began on the earth”，在下文空格，在下文空格中填上恰當?shù)脑~語，使文章連貫完整。中填上恰當?shù)脑~語，使文章連貫完整。No one knows exactly 1._the earth began.According to a widely accepted theory, the earth began with a “Big Bang”，2._exploded loudly and produced water vapour and manygases，3._(make) the earths atmosphere.As the earth cooled down, water appeared and stayed 4._the surface.It was thehowwhichmaking語語 篇篇理理 解解on presence of water 5._allowed the earth to dissolve harmful gases and acids into the oceans and seas, which made 6._possible for life to develop.First, the appearance of small plants encouraged the development of early shellfish and all sorts of fish.Next, green plants began to grow on land.7._were followed by land animals.So reptiles appeared for the first time.Later, dinosaurs developed.8._， they suddenly disappeared.After that, mammals came intothatit語語 篇篇理理 解解TheyHoweverbeing.Finally, humans appeared and spread all over the earth.However, they are putting too much carbon dioxide into the atmosphere, making the earth too hot 9._(live) on.So whether life will continue on the earth will depend on 10._this problem can be solved.語語 篇篇理理 解解to livewhether