课件41张PPT。Unit 3 Inventors and inventions Discuss in pairs which pictures show inventions and which show discoveries. An amphibious carStephenson’s “Rocket”DNAWork out the rules that will help you decide what a discovery is and what an invention is.1) A discovery is A discovery merely makes known something that already exist in nature, such as the discovery on the New Continent by Columbia. 2) An invention is An invention is something that created by human being, such as the lighting rod. What are the important inventions of the 20th century? Which do you think is the most important one?Enjoy the moviesThomas Edison invented the electric bulb. In pairs discuss any modern inventions you know. Describe them to your partner and explain how they changed people’s lives.television 1923 colour television 1940photocopier 1937air conditioner 1902electronic digital computer 1946Atomic bomb 1945Credit cards 1950Penicillin 1928Do you know the stages every inventor must go through before they can have their invention approved? Inventing is a scientific activity and so follows similar stages to those used in scientific research. Look at the following list and work out a suitable order.Pre-reading Applying for a patent 2. Finding a problem 3. Doing research 4. Testing the solution 5. Thinking of a creative solution 6. Deciding on the invention The text is mainly about the author’s experience in helping her mother get rid of the _____ and applying for the _____ for her invention. snakespatent Read the text quickly and complete its main idea.The problem of the snakesDivide the passage into several parts and find out the main idea for each paragraph.Part 1 (para.1)the discovery of the problem of the snakesPart 2 (para.2)Doing some research about the habits of snakesPart 3 (para.3)Deciding on the solutionPart 4 (para.4-6)the attempts to catch the snakesPart 5 (para.7-8)the requirements of getting a patentRead the text carefully and fill in the blanks.harminghabitshabitattrapcoolinglast /thirdin the eveningnetpatentdifferentvalid181. How did the writer catch the snakes? A. using something the snakes were interested to attract them into a trap. B. taking their habitat to another place. C. placing the snakes at a low temperature for them to sleep and then caught them. D. All the above. CRead the text carefully and choose the best answer.2. The writer was successful to catch the snakes in ____ attempt. A. the first B. the second C. the third D. everyC3. The following are used in the three attempts EXCEPT ____. A. perfume B. a bowl C. jelly D. ice-cubesA4. Why did cooling the snakes make them less active? A. Because snakes are warm-blooded animals. B. Because snakes like high temperature. C. Because snakes are reptiles and their body temperature depends on the heat around them. C5. Which of the following may get a patent according to the text? A. A computer programme. B. A new animal variety. C. A work of literature. D. A truly novel and useful invention.D6. The p ... ...
