2. 外语
  3. Complete the summary below. Choose ONE WORD ONLY from the passage for each answer. Write your answers in boxes 20-25 on your ans

Complete the summary below. Choose ONE WORD ONLY from the passage for each answer. Write your answers in boxes 20-25 on your ans

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问题 Complete the summary below.
Choose ONE WORD ONLY from the passage for each answer.
Write your answers in boxes 20-25 on your answer sheet.
                    Space for an increased population
According to the writer, the use of land for 【R20】______is the most serious threat to the environment. However, in the US, there has already been an increase in the amount of land used for 【R21】______and forests. Far less land would be required to feed the world’s population if the 【R22】______of the land could be improved worldwide. It has also been claimed that the industrial production of animal foods could allow greater access to animal 【R23】______by the entire world’s population. Scientists could use 【R24】______from domesticated animals to help produce meat by tissue cloning, and these species could then be allowed to die out. In addition to this type of meat, 【R25】______will also be widely available.
【R23】
选项
答案protein
解析 Paragraph 6: Nigel Calder suggested that ’nourishing but unpalatable primary food produced by industrial techniques—like yeast from petroleum—may be fed to animals... so that people in underdeveloped countries can have adequate supplies of animal protein... ’
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