Test analysis: A corresponds to the Revolution of 1911, B corresponds to the Reform and Reform, D corresponds to the new-democratic revolution led by China's * * * production party, and C conforms to the New Culture Movement.

Comments: The flags of the New Culture Movement: Mr. De and Mr. Sai, namely democracy and science. Human rights are democracy. Chen Duxiu put forward the ideas of political democracy, belief democracy, economic democracy, social democracy and ethical democracy, and called on people to take up the weapon of democracy and fight against the old ideology. Regarding science, Chen Duxiu believes that anything judged by science and reason as unsuitable for today's society, even if it is left by ancestors, loved by sages and advocated by the government, is worthless. Call on people to adhere to the scientific spirit and become the ruler and master of nature.