To write an argumentative essay that provides a variety of materials, we should not only pay attention to the uniqueness of the materials, but also pay attention to their individuality sometimes. The * * * nature of these three materials is clear at a glance, that is, they all explain that "academic research should pay attention to accumulation." If you only focus on this * * * nature, your thinking will be blocked when you write, and you will feel speechless and you can only pile up some examples. This requires further exploration of the individuality of materials.

Try to analyze and compare these three materials carefully. Lu Xun emphasized that accumulation should be persisted for a long time; Goethe emphasized that accumulation is of great value, and it is by no means a waste of light and energy; The history professor emphasized that many things accumulate. In this way, we can put forward three sub-arguments around the central argument of "learning should pay attention to accumulation", analyze it from three different aspects, step by step, and make the content of the article fully solid and in-depth. At the same time, these three materials can be taken into account and used for their own purposes.