TPO 32
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There is an argument of reading passage stating that some theories may be able to explain the reason of unknown sounds made around the Russian submarines underwater when patrolling between 1960 and 1989.However, the lecture totally disagrees with these three opinions.
To begin with, the noises were unlikely from the whales since the submarines were in very deep of water. Although the population of whales was rather huge around the submarine's area, the whales indeed were pretty far from the submarines. In addition, it is also impossible that submarines were not detecting such solid objects as large as whales.
Second, the sounds should not come from the giant squids which live deep in the sea either. The listening material claims that the sound only appeared in twenty years (from 1960s to 1980s), while the giant squids were impossible just to live for only that period. Instead, giant squid has always been lived there for long while the sound disappeared after 1980s.
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