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Biofuels IELTS Reading Answers Biofuels IELTS Reading Answers
Biofuels IELTS Reading Answers

Biofuels IELTS Reading Answers

The Academic passage ‘Biofuels’ is a reading passage that appeared in an IELTS Test. Read the passage below and answer questions 1 – 13. Beyond the questions, you will find the answers along with the location of the answers in the passage and the keywords that  help you find out the answers.

Biofuels

Biofuels - 0001

Biofuels - 0002

Biofuels - 0003

Biofuels - 0004

Biofuels - 0005

Answers

Question number  Answer  Keywords  Location of keywords
1 D Not only do Brazilians drive far less than Europeans and Americans, their fertile land, and favorable climate mean their crop yield is higher Paragraph D;

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2 F He predicts that a boom in bioethanol would lead to a competition between 800 million people in the world who own automobiles and three billion people who live on less than $2 a day, many of whom are already spending over half their income on food. Paragraph F;

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3 B Supporters claim they will cut our net greenhouse gas inputs dramatically because the crops soak up carbon dioxide from the atmosphere as they grow. Paragraph B;

Line 1

4 A Biofuel is an umbrella term used to describe all fuels derived from organic matter. Paragraph A;

Line 3

5 E a study by David Pimentel at Cornell University in New York concluded that corn ethanol creates more greenhouse gases than burning fossil fuel. Paragraph E;

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6 C The controversy may be brand new, but the biofuels themselves are an old idea. The Model T Ford, first produced in 1908, was designed to run on ethanol, and Rudolf Diesel who invented the diesel engine in 1892, ran his demonstration model on peanut oil. Paragraph C;

Lines 1 – 2

7 molecules Its molecules comprise chains of sugars Paragraph G;

Line 6

8 Cell walls/structural component Its molecules comprise chains of sugars strong enough to make plant cell walls. Paragraph G;

Line 6

9 ferment If you could break down these molecules to release the sugars they contain, you could ferment them until ethanol is created Paragraph G;

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10 switchgrass Developing such a process could open the door to many non-food materials such as switchgrass – a wild grass that lives on the eastern states and Midwest of the US – straw, crop residues like stalks and hardwood chips. Paragraph G;

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11 corn Its supporters say these cellulose materials could deliver twice as much ethanol per hectare as corn, Paragraph G;

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12 environmentally do it using land that is today neither economically productive nor environmentally precious. Paragraph G;

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13 C If the numbers add up this could be the development that may yet deliver us from our dependence on oil without costing us the Earth in the process. Paragraph G;

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