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53 至 56 題為題組 Many marine animals, including penguins and marine iguanas, have evolved ways to get rid of excess salt by using special salt-expelling glands around their tongue. However, the sea snake’s salt glands cannot handle the massive amounts of salt that would enter their bodies if they actually drank seawater. This poses a serious problem when it comes to getting enough water to drink. If seawater is not an option, how does this animal survive in the ocean? An international team of researchers focused on a population of yellow-bellied sea snakes living near Costa Rica, where rain often does not fall for up to seven months out of the year. Because yellow-bellied sea snakes usually spend all of their time far from land, rain is the animals’ only source of fresh water. When it rains, a thin layer of fresh water forms on top of the ocean, providing the snakes with a fleeting opportunity to lap up that precious resource. But during the dry season when there is no rain, snakes presumably have nothing to drink. Thus, the team became interested in testing whether sea snakes became dehydrated at sea. 第 7 頁 105年學測 共 7 頁 英文考科 - 7 - The researchers collected more than 500 yellow-bellied sea snakes and weighed them. They found that during the dry season about half of the snakes accepted fresh water offered to them, while nearly none did during the wet season. A snake’s likelihood to drink also correlated with its body condition, with more withered snakes being more likely to drink, and to drink more. Finally, as predicted, snakes captured during the dry season contained significantly less body water than those scooped up in the rainy season. Thus, it seems the snake is able to endure certain degrees of dehydration in between rains. Scientists believe that dehydration at sea may explain the declining populations of sea snakes in some parts of the world.
【題組】 53. What is the purpose of the study described in this passage?
(A) To test if sea snakes lose body water at sea.
(B) To see whether sea snakes drink water offered to them.
(C) To find out if sea snakes are greatly reduced in population.
(D) To prove that sea snakes drink only water coming from rivers.


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1F
黃瓊瑤 國三下 (2016/11/05)

许多海洋动物,包括企鹅和海洋鬣蜥,是通过使用特殊的盐腺排出在舌头除去多余的盐得到的方式。然而,海蛇的盐腺不能处理大量的盐,会进入他们的身体,如果他们真的喝海水。这构成了一个严重的问题,当它得到足够的水喝。如果海水不是一种选择,这种动物如何在海洋中生存?一个国际研究小组的研究主要集中在人口黄腹海蛇生活在哥斯达黎加,那里的雨往往不到七个月的一年。因为黄腹海蛇通常花费他们所有的时间远离陆地,雨是动物的淡水的唯一来源。当下雨的时候,一层薄薄的淡水就形成在海洋之上,为蛇提供了一个短暂的机会,以一圈那宝贵的资源。但在旱季时,没有雨,蛇大概没有什么可喝的。因此,该小组对测试是否海洋蛇在海上脱水感兴趣。研究人...


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2F
有哥在 大二下 (2020/07/12)
53. What is the purp☆☆☆ ☆☆ ☆☆☆ ...


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53 至 56 題為題組 Many marine animals, inclu..-阿摩線上測驗