新發(fā)展研究生英語綜合教程-資料下載頁
2025-08-05 07:47本頁面
【正文】 ptation to the environment, the greater the chances of survival. This pathway leads to specialization:fish need water in which to swim, birds need wings with which to fly, koalas need eucalyptus leaves to eat ———— nothing else will do.PartB2（答案）: 隨著《物種起源》的發(fā)表，查爾斯達爾文在1859年就決斷性地宣傳了物種是在進化的，而且并非經久不變。這種革命性的理念可以用化石記錄做出解釋，而無須求助于《圣經》中大洪水的故事，也無須求助于那種認為由于這場全球性的災難所有動植物都滅絕了的觀點?，F(xiàn)在已經可以對現(xiàn)代動物和化石動物進行比對以劃定年代表，其中記錄了曾經發(fā)生過的很多變遷，而各類化石的分布也開始具有了新的重要意義。顯然，某個化石集中的地方反映出某一特定時段內的氣候特點和長時期內的氣候變化。12年后，達爾文才把他的進化論應用于人類，其中包括進化機制、自然選擇對眾多的正常生物變異所起的作用。之所以拖這么長的時間與其說是因為勇氣不足，倒不如說因為缺少化石證據(jù)。 達爾文所反復強調的“適者生存是最適應生存的物種才能生存”使人類對有機生命體的適應能力有了深入了解。有機生命體的適應能力增加了其存活的機會，也增加了其比競爭對手繁殖更多后代的機會。越適應環(huán)境，生存下去的幾率也就越高。這條道路導致了特化作用：魚需要水才能游，鳥有了翅膀才能飛，樹袋熊只吃桉樹的葉子————其它東西都無法取代。二、作文a) the government has announced that it wishes to build a subway station in your munity.b) The Moment of WeChat has destroyed munication among friends and family.c) Some believe that university students should be required to attend classes. Others believe that going to classes should be optional….d) It is better for children to grow up in the countryside than in big cities…..e) Only people who earn a lot of money are successfulf) Neighbors are the people who live near us. In your opinion, what are the qualities of a good neighbor?g) Smoking should be banned or not in all public places in your country.h) What are the elements of a good family in your country?
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