• 2022-05-27
    a baffling problem
    A: difficult
    B: simple
    C: puzzling
    D: long
    E: new
  • C

    内容

    • 0

      It is ______ problem that few people can solve it. A: such difficult a B: such difficult C: so difficult a D: so difficult

    • 1

      There is no simple ____________ to the problem of overpopulation.

    • 2

      The new pills seemed to be a solution to ______. A: the problem of overweight that has obsessed Americans for a long time B: the problem that is of great weight and significance C: heart disease, diabetes, and stroke D: the side effects of weight-loss drugs

    • 3

      Unit cost is simple in theory, but can it be implemented in practice? A: simple B: not complicated C: difficult to apply D: convenient

    • 4

      The problem is difficult for us.