Unit19 book1 Modern Agriculture 新课标 人教.ppt

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1、Modern Modern AgricultureAgricultureReading The Lecturer:Look at the pictures,lets learn the new words and expressions about reading.TASK 1revision and lead-inchemical fertilizerelectric pumpgreenhouseseedbedtractorcottonricegreen peppersoybeantobaccocorninsectkill insectswatermelonseedless watermel

2、onGM watermelonQuestions:1.Are there any students coming from the countryside in our class?2.Have you ever worked in the fields?3.With whom did you work in the fields?4.Can you do a lot of farm work?5.Have you ever heard of anything about farming in the past?TASK 2 Pre-reading Look at the pictures a

3、nd compare traditional and modern farming.In the first picture:*Some pieces of farm fields.In the second picture:*A farmer is ploughing the field with cattle.In the third picture:*Farmers are using a machine to work in the fields.What are the differences between traditional and modern farming?Tradit

4、ional farmingModern farming cheap to own and to keepexpensive to buy and to useIt results in pollution.It does not pollute the air.animalsmachines In the past,farmers grow crops in the traditional way.Using cattle to plough the field.farmers work most of the day all year round,but they could not pro

5、duce enough food for the whole population.At present,they use modern techniques in their fields to improve agricultural production such as chemical fertilizers,greenhouses and so on.Great changes have taken place in agriculture.TASK 3 Reading1.When was more advanced technical information was brought

6、 in from abroad?2.What is important for future agriculture?What should future agriculture depend on?3.What does“which”refer to in the last two lines?1.In the 1980s2.Both food production and taking care of the environmentDepend on high technology and traditional methods3.”Golden rice”GM rice Read the

7、 text again and find out the topic sentence in each paragraph.Para.1:For thousands of years traditional agriculture in China did not change very much.Para.3:Not only food production is important but also taking care of the environment.Para.2:Over time,many farming techniques have been modernized.Par

8、a.6:The tomato is one of nearly 4,500 different plants that are genetically modified.Para.5:Another technique tries to create plants that produce more and bigger crops.Para.4:Using the latest technologies,Chinese scientists grow vegetables in greenhouses.Read the text again and then choose the best

9、answers.1 In China only seven percent of the land is used for farming.This is _.A because farmers dont need more land to produce food for the whole population B because China needs more&more land to build cities C because there are not enough farmers to work on the land D because the other land cant

10、 be used for agriculture2 Fertilization is a technique that is used to _.A make poor soil better B make wet land drier C make dry land wetter D grow vegetables with their roots in water instead of earth Reason:(para.1)Only 7%of the land can be used for farming.Reason:(para.2)Farms have used fertiliz

11、ation to make their land produce more.3 Modern agriculture means finding ways to _.A increase irrigation&stop using fertilizers B stop irrigation&using fertilizers C increase production&be friendly to the environment D produce the same amount while taking better care of nature4 In the sentence“they

12、are protected from the wind,rain&insects”,“they”means _.A greenhouses B roots C vegetables D tomatoesReason:(para.3)New techniques should increase production but also be friendly to the environment.Reason:(para.4)Many vegetables are not grown in gardens but in greenhouses where they are protected fr

13、om the wind,rain and insects.5 In GM“M”stands for“modified”,which means“changed”.What changes is _.A the way in which poor soil is made better B the way in which Chinese farmers work on their land C the way in which crops develop from seed D the way in which farmers take care of the environmentReaso

14、n:(para.5)In other words,the way tomatoes grow from a natural seed is changed.1.No advanced technical information was brought in from abroad before 1980.2.Scientists have always tried to increase farming production without harming the environment since the early 1990s.3.Traditional methods of farmin

15、g have no advantages so they wont be used in future agriculture.4.The average arable land for each Chinese is much less than that of the world.TASK 4 True or false?FTFT5.Growing vegetables in green houses has so many advantages that it can reduce losses caused by bad weather and that it can partly s

16、ettle the problem of the shortage of arable land.6.GM is a new technique that can make a plant quite different from what it used to be,bigger and healthier and with no diseases,but it takes longer time to grow.7.The GM technique can only be used on plants,but not on animals at the present time.TFFTA

17、SK 5 Summary of the text:Although China is a very big country with less farm land,to make as much u_ of the land as possible,two or more c _are planted every year,where possible.In this way,t _is saved and farmers are a_ to grow an extra crop in each season.To solve the problem of s_ of a_ land,many

18、 vegetables are not grown in gardens but in g_,where the temperature is c_ with computers and vegetables are p_ from the outside.Some plants are developed by u_“GM”.Thanks to it,they can grow b_ and h_ without danger from disease in p_ land.seropsimellowedhortagerablegreenhousesrotectedsingbiggerealthieroorerontrolledHomeworkHomework 1.Go over the“Reading”and find out the useful expressions in it.3.Exx 1,2,3pp108-1092.Do Exx 2Post-reading