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.
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.
举一反三
- A series of brilliant scientific discoveries _____ made by them. A: have B: was C: has D: are
- In preparing scientific reports of laboratory experiments, a student should ________ his findings in logical order and clear language.
- Experiments have shown that the ______ needs time to digest what has been learnt.
- Learning something new is, after all, what scientific experiments are all ______. A: about B: against C: towards D: around
- The first stage of scientific method includes expressing a research question and _______ an answer to it. A: