Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 11-14 on

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问题 Complete the summary below.
Choose NO MORE THAN TWO WORDS from the passage for each answer.
Write your answers in boxes 11-14 on your answer sheet.
                         Green sand
The use of crushed green glass(AFM)may have two significant impacts: It may help to save a diminishing 【R11】______while at the same time solving a major problem for the 【R12】______in the UK. However, according to Howard Dryden, only glass from bottles that have been used for 【R13】______can be used in the production process. AFM is more effective than 【R14】______as a water filter, and also has other uses.
【R11】

选项

答案natural resource

解析 Paragraph B: The idea is not only to avoid using up an increasingly scarce natural resource, sand...
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