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课件网) 英语·必修3(人教版) 第一学时 Reading and Comprehension Task 1 快速阅读课文“How life began on the earth”，以约30词写出文章的段落大意。 温馨提示：本文是科普文，属于说明文的范畴，写摘要时要抓住文章要说明的主要问题：地球上生命起源的几个主要阶段。 语 篇 理 解 _____ 语 篇 理 解 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 语 篇 理 解 根据课文“How life began on the earth”，选择正确答案。 1．From Paragraph 1 we can know that stars are created from_____． A．air B．atoms C．rocks D．ice B 2．What 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? A．Planets. B．Stars. C．Gases. D．Fire and rock. 语 篇 理 解 D 3．Which is the right order of the development of life? A．Small clever animals—shellfish—dinosaurs— mammals. B．Shellfish—dinosaurs—small clever animals— mammals. 语 篇 理 解 C C．Shellfish—dinosaurs—mammals—small clever animals. D．Dinosaurs—shellfish—mammals—small clever animals. 语 篇 理 解 4．Why were mammals different from other life forms? A．They gave birth to young baby animals and produced milk to feed them. B．They produced young generally by laying eggs. C．They were able to live on land as well as in the water. D．They live on grass. A 语 篇 理 解 5．What problem is caused by human beings? A．They exist everywhere on the earth. B．They cause global warming. C．They find new methods of growing crops. D．They enjoy hunting and fishing. 语 篇 理 解 B Task 3 语 篇 理 解 Insects Amphibians Reptiles Dinosaurs Mammals including 3．_____ Water Land animals human beings Task 4 根据课文“How life began on the earth”，在下文空格中填上恰当的词语，使文章连贯完整。 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 earth's atmosphere.As the earth cooled down, water appeared and stayed 4._____the surface.It was the how which making 语 篇 理 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 into that it 语 篇 理 解 They However being.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 ... ...
