• 2022-06-03
    Just as the tree is the unit of a forest and the book the unit of a library, _______ the molecule is the unit of matter.
    A: as
    B: like
    C: so
    D: thus
  • C

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      Which unit below is not in the System International (SI) of units? A: Unit of length is the meter (m) , B: The force unit is the pound (lb), C: The time unit is the second (s), D: The temperature unit is the kelvin (K).

    • 1

      The title of the book Eve and her friends introduced in this unit is _______.

    • 2

      The word “Li” in “Lv Li” was referred to: () A: A closed living unit B: A semi-open living unit C: A living unit for governing residents D: An open living unit

    • 3

      Some of you may have finished Unit 1. ___ , you can go on to Unit Two. A: If you may B: If you do C: If not D: If so

    • 4

      如果组件变得很脏,那么组件的寿命将会缩短。 A: The life of the unit will decrease if you let the unit become dirty. B: The life of the unit is impaired if the unit is allowed to get dirty. C: The life of the unit is lost if the unit is allowed to get dirty.