【答案解析】Science can not be separated from imagination, creative thinking, as well as information collection and making experiments. Fact itself is not science, which is just like the words that an scientist said: science was set up with facts, as a house was set up with bricks; the collected facts could not be called as science, as a pile of brick could not be called as house. Most of scientists set about their own probe through understanding the work other scientists do about one certain problem. After acquiring some known facts, scientists begin their research works. The formed way to resolve problems is called as hypothesis.