题目内容
（请给出正确答案）
提问人：网友w*****2
发布时间：2022年3月14日 23:15
[单项选择题]
Chemistry did not emerge as: science until after the scientific revolution in 17th century and then ...Which of the following is NOT mentioned as one of the factors blocked the development of chemistry as a science
A．The difficulty of organizing materials in system
B．Social and intellectual difficulties
C．The element of secrecy
D．The difficulty of improving techniques
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