填空题

  • A. milk, meat, vegetables, etc. were delivered
  • B. it has promoted the sales of many kinds of commodities
  • C. foods can be preserved
  • D. most kids like iced soft drinks
  • E. every housewife needs food
  • F. the fridge produced when it is working

The invention of the fridge has not provided a new, economical way in which______.

【参考答案】

C
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