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What does the underlined word “it”in Para. 7 refer to?

  • A.Earning a lot of money.
  • B.Purchasing new commodities.
  • C.Discarding useless old stuff.
  • D.Collecting second-hand stuff.
试题出自试卷《2016年10月全国自主考试综合英语(一)真题及答案》
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