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高二英语下学期unit 13 reading

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高二英语下学期unit13reading
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Integrating Skills o Nature s Nursery Estuaries Skim and find out the main top sentences Task one Activity 1Activity 1 Finding Topic Sentences Topic Sentence of Paragraph Sentence As the oceans are the source of life on earth As the oceans are the source of life on earth the estuaries are our planet s nurseries the estuaries are our planet s nurseries Topic Sentence of Paragraph Sentence Estuaries are great places for nature s young ones Estuaries are great places for nature s young ones Topic Sentence of Paragraph Sentence Estuaries are also important because they absorb Estuaries are also important because they absorb nutrients and pollutants from water coming from nutrients and pollutants from water coming from inland sources thus cleaning our water inland sources thus cleaning our water Topic Sentence of Paragraph Sentence Estuaries provide both recreation and education Estuaries provide both recreation and education for human beings for human beings 3 3 2 2 4 4 1 1 Activity 2Activity 2 Structure of the passage 1 1 2 2 4 4 3 3 1 1 2 2 4 4 3 3 1 1 2 2 3 3 4 4 Task Two Questions 1 Why are estuaries such good places for nature s young one 2 What does density mean in this passage 3 How do estuaries affect the water that passes through them 4 Why are estuaries important to human beings Q1 Because the habitat provides all the benefits of the ocean energy and nutrients without the dangers waves and storms Q2 Density means the number of species per area in this passage Q3 Estuaries absorb nutrients and pollutants from water coming from inland sources thus cleaning our water Q4 Since estuaries act as filters many pollutants end up in the estuaries Q5 Estuaries are important to human beings because we like to study and relax in them and because they contribute to the economy through tourism and fishing Task three Write your own paragraphs Topic Step 1 Step 2 Step 3 What will happen to a piece of metal if you put it in water Describe what happens Describe the causes and effects The conclusion Sample writing If a piece of metal or any other object is put in water it will dissolve Because the water molecule is made up of one oxygen and two hydrogen atoms It is polar that is it has a slightly negative and a slightly positive end The two ends make it possible for water to break down both solids and gases So a piece of metal will dissolve when it is put in water
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