EPISODE · Jul 25, 2017 · 3 MIN

34神秘的“无底洞”【旧版】

from 普通话水平测试朗读作品50篇【2024新版+旧版】

【字幕版】作品34号　　地球上是否真的存在“无底洞”？按说地球是圆的，由地壳、地幔和地核三层组成，真正的“无底洞”是不应存在的，我们所看到的各种山洞、残品、裂缝，甚至火山口也都只是地壳浅部的一种现象。然而中国一些古籍却多次提到海外有个深奥莫测的无底洞。事实上地球上确实有这样一个“无底洞”。　　它位于希腊亚各斯古城的海滨。由于濒临大海，大涨潮时，汹涌的海水便会排山倒海般地涌入洞中，形成一股湍湍的急流。据测，每天注入洞内的海水量达三万多吨。奇怪的是，如此大量的海水灌入洞中，却从来没有把洞灌满。曾有人怀疑，这个“无底洞”会不会就像石灰岩地区的漏斗、竖井、落水洞一类的地形。然而从十二世纪三十年代以来，人们就做了多种努力企图寻找它的出口，却都是枉费心机。　　为了揭开这个秘密，一九五八年美国地理学会派出一支考察队，他们把一种经久不变的带色染料溶解在海水中，观察染料是如何随着海水一起沉下去。接着又察看了附近海面以及岛上的各条河、湖，满怀希望地寻找这种带颜色的水，结果令人失望。难道是海水量太大把有色水稀释得太淡，以致无法发现？//　　至今谁也不知道为什么这里的海水会没完没了地“漏”下去，这个“无底洞”的出口又在哪里，每天大师的海水究竟都流到哪里去了？--节选自罗伯特?罗威尔《神秘的“无底洞”》【拼音版】

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34神秘的“无底洞”【旧版】

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