Unit3导学案高中英语人教版（2019）选择性必修第一册.docx

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1、选择性必修一 Unit 3（一）THE SIXTH EXTINCTIONUnderstand the textI. Read the text (pp. 52-53) carefully and complete the following chart.Meaning Entire species are wiped out. Volcanic 1. _ExtinctionThe usual reasons Asteroids hitting the Earth from space Changes in sea 2. _ The decrease of the oxygen content

2、of the sea Global 3. _Two notableextinctionsThe third one(The “Great Dying”)Killing 90% to 4. _ of all speciesand theirconsequencesThe fifth one Causing the death of the 5. _SignHuman activities causing species to die out 6._ times faster than normal Air and water pollutionThe main reasons 7. _ bein

3、g destroyed Factory farming and overfishingThe potential Up to 8. _ quarters of all species on EarthThe sixth influence could be wiped out, including human beings.extinction Saving endangered species, including setting up9. _ areas where plants and animals can beprotectedWays to avoid it Changing ho

4、w we work and travel by usingcleaner, more natural sources of energy, such aswind and 10. _ energy Improving our 11. _ methods to reducewater, air and land pollutionII. Read the text (pp. 52-53) again and decide whether these statements are true (T) or false(F).1. More than 96% of all species that e

5、ver lived on the Earth are extinct. ( )2. Dinosaurs were wiped out because of the decrease of the oxygen content in the “GreatDying”. ( )3. In 1980, there were only 250 black robins left in the world. ( )4. It is not too late for us to take action and do something to protect our planet. ( )Think and

6、 share1. What have you learned from the story of the black robin? Share with your group members.2. Are there any factories polluting your neighbourhood? How do they affect your everyday life?Discuss with your partners.答案Understand the textI.1. eruptions 2. levels3. warming 4. 96%5. dinosaurs 6. 1,00

7、07. Forests 8. three9. special 10. solar11. farmingII.1-4 FFFTThink and share略（二）THE ROAD TO DESTRUCTIONUnderstand the textI. Read the text (pp. 58-59) carefully and fill in the following blanks. The past 20 years have seen a(n) 1. _ rise in the number of cars inBritain.Some figures In Britain, road

8、 accidents have caused an average of 2. _ deathsabout cars and every year over the last decade.their influence Traffic is one of the leading causes of 3. _ and climate change. Air pollution causes nearly 4. _ deaths per year. Some kinds of cancer are related to 5. _.Use your legs. To save money, kee

9、p fit and live longer To cut the risk of 6. _ by 50%How to give upUse publictransport. 90 people travelling in one bus will need at least 7._ cars. You can relax, read a book or talk to someone.driving Think before you Think about whether you really need to go somewherego. before you get into your c

10、ar.Share cars. Much 8. _ and kinder to the environment9. _!Do whatever you can do to reduce noise, pollution anddanger of traffic.II. Read the text and tell what the underlined pronouns refer to.1. Oh, really? It took me over an hour. (Part 1, line 3)_2. Sometimes it can take a little bit longer, bu

11、t so what? (Part 2, line 12)_3. It is much cheaper and kinder to the environment. (Part 2, line 21)_4. If your street is full of heavy traffic, talk to your neighbour about it. (Part 2, line 24)_5. After that, I have to take my son to a party. (Part 2, line 29)_Think and share1. Think about some oth

12、er methods to deal with the problems caused by traffic and share youropinion with your group members.2. Electronic cars are getting more and more popular. What are the advantages and disadvantagesof an electronic car? Give a presentation to your group members.答案Understand the textI.1. 25% 2. 2,5003. global warming 4. 30,0005. traffic pollution 6. heart disease7. 18 8. cheaper9. Take actionII.1. To go downtown.2. Travelling in a bus.3. Sharing journeys with someone else.4. Your street being full of heavy traffic.5. Driving to the supermarket to do the shopping.Think and share略