• 2022-06-06
    Such the results of the experiments.
    A: is
    B: was
    C: are
    D: as be
  • C

    内容

    • 0

      ______ be careful in making such experiments. A: Do B: Does C: Did D: Will

    • 1

      【判断题】It discusses some experiments.

    • 2

      They are busy doing ______________(scientist) experiments.

    • 3

      The primary sources in doing research include ( ) A: Documents such as poems, diaries B: Research results generated by experiments, which are published as journal articles in some fields of study C: Court records, surveys, interviews and fieldwork D: Sets of data, such as census statistics which have been tabulated, but not interpreted

    • 4

      对这一问题实际上还没有进行过科学实验。______ A: People have not made scientific experiments on this question practically. B: Practically speaking, they haven’t yet made scientific experiments on this question. C: This question has not been tested by scientific experiments practically. D: Practically no scientific experiments have yet been made on this question.