在上期,我们认识了一株奇特的“活化石”苏铁。令人称奇的是生长在寒冷北方户外的它能年年开花。最令人百思不得其解的是,与它相邻不过几步的同种、同批的另一株苏铁却十几年仅开花一次。这是为什么呢?种了几十年花草的老园丁,对此也是丈二和尚摸不着头脑。难题最终被一个五年级的小学生破解了。 In the last issue, we met a strange “living fossil” cycad. Amazingly, it grows year after year in the cold north outdoors. The most puzzling thing is that the other batch of the same kind of same type of cycad that is adjacent to it only takes a dozen or so years of flowering once. Why is this? The old gardener who planted the flowers for decades, which is also the second monk Zhang Toumou mind. The problem was finally solved by a fifth grader.