• 2021-04-14
    Her studies showed that the effects of the rays were constant even when the uranium ore was treated in different ways. (Para. 5)
  • Her research showed that no matter how the uranium ore was treated, it emitted the same amount and strength of rays.

    内容

    • 0

      Although the twins were adopted by different families , they showed surprising ______ in their lives .

    • 1

      Some of the students were so________(埋头) intheir studies that they sometimes even forgot their meals.

    • 2

      In many ways, children live, ________, in a different world from adults. A: as they were B: as it is C: as they are D: as it were

    • 3

      Even as a girl, ___________to be her life, and theater audiences were to be her best teachers.

    • 4

      According to the passage, if there were 500 tons of uranium ore, how many tons of useful uranium-235 could be extracted A: 1 kilogram. B: 10 kilogram. C: 50 kilogram. D: 500 kilogram.