There may be other life forms in the universe because over 50 extrasolar planets

游客2024-05-11  15

问题 There may be other life forms in the universe because over 50 extrasolar planets were discovered in 2001. [br] The animals living in extreme oceanic environments have to feed on certain bacteria that help them get energy from______.

选项

答案 the water

解析 由题干关键词bacteria,get energy可将答案定位至第二个小标题下第三段第三句。The tubeworms have bacteria in their tissues that help them derive energy from the water,原文中the water就是答案。
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