作者写此文时能由发散思维到聚合思维再到发散思维。首先想到要写“读书”——思维发散；再想到要写读书中的“打基础”——思维聚合；最后想到要用“树根深入大地”来比喻“打基础”——思维在聚合后实现新的发散。因此,入木三分,载体新颖。 When the author writes this article, he can develop from divergent thinking to convergent thinking to divergent thinking. The first thought was to write “Reading”—thinking divergence; then think of writing “basic” in reading—the convergence of thinking; finally thinking of using “rooting deep in the earth” as a metaphor for “basing”—thinking after polymerization Realize new divergence. Therefore, three points into the wood, the carrier is novel.