Task 4. read the article. 15. choose the best summary of the text ‘can scientists save the day? ’(a, b or c) a. scientists have had several ideas for fighting global warming, such a s removing carbon from fuel. when the plans are finished, they will need to be safe and not expensive. b. scientists are designing engineering projects to fight global warming. there are two approaches: removing carbon from fossil fuels and reducing the solar energy that reaches the planet. the designs are not finished yet and should be safe. c. if we can reduce the carbon in fuel or the solar energy that hits the earth, we can win the fight against global warming. there are many possible solutions to the problem. governments haven’t decided which plan to follow, but they want plans that are safe. can scientists save the day? scientists are thinking the unthinkable: can engineering projects save the world from global warming? how can we save the planet if we can’t reduce our production of carbon? there two main approaches to this question. one approach involves the removal of carbon from fossil fuels. there two ways to do this. the first involves removing carbon from the fuel before it is burnt. currently, this happens in norway where co2 is removed from natural gas as it comes out of the ground. the second involves capturing the co2 when it is produced by power stations. both of these methods are expensive, but they could reduce the co2 produced by 90 percent. the other approach is to reduce the amount of solar energy which hits the earth. some scientists have suggested putting a giant mirror in space. others have suggested increasing the number of clouds over the oceans because they reflect back the sun’s rays. this last technique has the advantage of being easy to stop and start. there are many unanswered questions about these ideas, but they must be safe and not cause more damage. any large engineering project mustn’t harm the earth or the life on it. otherwise, the cure for global warming might be worse than the original illness. task 5. check your understanding: true or false. circle t (true) or f (false) or ns (not stated) for these sentences (16 – 25). transfer your answers to your answer sheet. 16. the engineering ideas will be useful if we don’t decrease our co2 production. t f ns 17. the rapid change of the climate is caused by high levels of carbon dioxide in the atmosphere due to the burning of fossil fuel. t f ns 18. in norway, the co2 is removed when the natural gas is used. t f ns 19. the carbon removal methods could be very effective. t f ns 20. there are three ideas for reflecting more solar energy. t f ns 21. the space mirror is an expensive idea. t f ns 22. it is not difficult to control the cloud formation method. t f ns 23. most of the ideas are dangerous for the planet. t f ns 24. scientists mustn’t create more problems with their solutions. t f ns 25. all the projects mentioned in the article can cause more harm than benefit. t f ns

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kekkak22

4,8(98 оценок)

Впервом текст b сокращенный вариант. 16 - t, 17 - t, 18- f, 19- t, 20- f, 21- ns, 22- t, 23- ns, 24- t, 25- t

вика87

4,5(91 оценок)

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