练习材料：
[Day 1689 2019-05-11]
L54-3: Instinct or cleverness?
They were visited by a large colony of ants which obtained a sort of honey from them. I immediately embarked on an experiment which, even though it failed to get rid of the ants, kept me fascinated for 24 hours. I bound the base of the tree with sticky tape, making it impossible for the ants to reach the aphids. The tape was so sticky that they did not dare to cross it. For a long time. I watched them scurrying around the base of the tree in bewilderment. I even went out at midnight with a torch and noted with satisfaction (and surprise) that the ants were still swarming around the sticky tape without being able to do anything about it. I got up early next morning hoping to find that the ants had given up in despair. Instead, I saw that they had discovered a new route.
They were climbing up the wall of the house and then on to the leaves of the tree. I realized sadly that I had been completely defeated by their ingenuity. The ants had been quick to find an answer to my thoroughly unscientific methods!
朗读时间：1m9s/1m12s
任务配置： L0+L4
知识笔记：
练习感悟：
有点晚了 所以读得很不仔细…
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