Read the passage and choose the correct answer----- Nội dung dịch tự động từ ảnh ----- E Renton Righelato, visiting research fellow at the University of Reading and former chairman of the World Land Trust, agrees. 'Given that it would take the world's entire supply of arable land to replace just two-thirds of our transport fuel needs,' he says, "biofuels are not a practicable long-term solution for transportation emissions. What we need is carbon- free fuel. But in the case of abandoned croplands, using grasses as biofuels could make a contribution,' he adds. Study co-author Adam Wolf, of the Carnegie Institution for Science at Stanford University, cites a study by Elliott Campbell in Science magazine that showed that burning grasses in a coal-fuelled plant doubles the savings in carbon emissions compared to using the same grasses to make ethanol. 'If biofuels are going to reduce emissions, using abandoned croplands to make electricity and offset coal use is our best bet,' he says. 'Both of these countries have coal- fuelled power plants, so the process could start soon.' Thus, Russia and Kazakhstan are now in a position to become leaders in green energy, and could use the grasses to export clean electricity in addition to oil and gas, according to Mr Wolf. Questions 6-9 Look at the following statements (Questions 6-9) and the list of scientists below. Match each statement with the correct scientist, A-D. 6 More attention will be paid to the situation in the boreal forests in the future. 7 Boreal forests are able to deal with some of the damage that is done to them. 8 Earlier research may have underestimated the scale of a future problem. 9 The damage done by destroying boreal forests lasts for a very long time. List of scientists A Josep Canadell B Sebastiaan Luyssaert C Jing Ming Chen D Nigel Roulet Questions 10-13 Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer. Wild grasses in Russia and Kazakhstan Questions 1-5 Scientists believe that wild grasses which are The reading passage has five paragraphs, A-E. currently growing on former 10. in Which paragraph contains the following information? Russia and Kazakhstan could be useful in combating environmental problems. There are Write the correct letter, A-E. two different ideas concerning how this could NB You may use any letter more than once. happen. 1 a view concerning what can and what cannot replace something 2 a mention of the amount by which carbon emissions might increase in the future 3 a reference to an established belief that researchers say is incorrect 4 evidence from one study that supports the conclusions of another study With the first idea, approximately ten million tons of carbon would be stored in the ground, and three-quarters of this would create 11 that could be used instead of petroleum-based fuels. The second idea is to burn the grasses in 12 power plants. Supporters of this idea say that the effect in reducing carbon emissions would be twice 5 how much carbon is currently located in a particular part of the world as great as if the first idea was carried out. The grasses would be used to produce 13 and production of this could begin in a short period of time. |