Test and analysis: scientific and technological progress is an important factor to promote economic development and cultural development. Since ancient times, every major scientific and technological discovery and invention has promoted the economic and cultural development of human society. Lu Xun's words fully explained the role of scientific and technological progress in social development. The essence of the increasingly fierce international competition in today's world is the contest of comprehensive national strength based on economic and scientific and technological strength. Lu Xun's words also inspire us to popularize scientific knowledge, carry forward the scientific spirit, and form a good atmosphere of advocating science, encouraging innovation and opposing superstition and pseudoscience in the whole society. ① ④ It has nothing to do with the meaning of the question. The answer to this question is C.