• 2022-06-06 问题

    Suppose that in the year 2015 the number of births is temporarily high. How does this baby boom affect the price of babysitting services in 2020 and 2030?(Hint:5-year-olds need babysitters,whereas 15-year-olds can be babysitters.)

    Suppose that in the year 2015 the number of births is temporarily high. How does this baby boom affect the price of babysitting services in 2020 and 2030?(Hint:5-year-olds need babysitters,whereas 15-year-olds can be babysitters.)

  • 2022-06-05 问题

    what does Tom think about hiring a babysitter A: Few babysitters can be considered trustworthy. B: It will add to the family’s financial burden. C: A babysitter is no replacement for a mother. D: The children won’t get along with a babysitter.

    what does Tom think about hiring a babysitter A: Few babysitters can be considered trustworthy. B: It will add to the family’s financial burden. C: A babysitter is no replacement for a mother. D: The children won’t get along with a babysitter.

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