<dfn id="w48us"></dfn><ul id="w48us"></ul>
  • <ul id="w48us"></ul>
  • <del id="w48us"></del>
    <ul id="w48us"></ul>
  • 托福TPO31綜合寫作及材料原文

    時(shí)間:2024-07-18 03:24:41 托福(TOEFL) 我要投稿
    • 相關(guān)推薦

    托福TPO31綜合寫作范文及材料原文

      對(duì)于中華龍鳥化石骨骼周圍的細(xì)紋圖案到底是羽毛還是皮膚纖維,托福TPO31綜合寫作的兩份材料都有著不同的見解。下面是小編分享的材料原文和參考范文,歡迎閱讀!

    托福TPO31綜合寫作范文及材料原文

      托福TPO31綜合寫作參考范文

      The reading passage refutes the idea that the lines in the Sinosauropteryx fossil indicated a feathered dinosaur by demonstrating several counterarguments. The lecturer, however, is strongly convinced that lines could represent feathers through addressing the questions advanced by the reading.

      To start with, according to the reading, those lines may derive from decomposition of a died dinosaur’ skin instead of being part of a living one. The lecturer does not believe this point for the reason that other animals’ fossils that are buried at the same site have not shown such kind of decomposition; instead, their functional skin structures have been perfectly preserved in the volcanic ash. Therefore, these lines are likely to be well-preserved feathers instead of fibers.

      Moving on, the reading proposes that the lines may be the frills rather than remains of feathers. The listening argues this is not true. She further explains that there is an apparent chemical difference between feathers and frills. Feathers contain protein called beta-keratin while frills do not. And the chemical analysis suggested that Sinosauropteryx’s structures contain protein beta-keratin.

      Last but not least importantly, the reading puts emphasis on such a fact that lines around the backbone and the tail of the Sinosauropteryx cannot play the role of helping it fly or regulating its body temperature but common feathers have these functions. The lecturer, by contrasts mentions other functions of the feathers by using peacock as an example. The peacock has colorful feathers in its tail to attract the mate. Recent analysis has found that Sinosauropteryx’s structures are also colorful, which can also be used for display.

      Lastly, the author argues that the burning mirror is less effective and flexible than flaming arrows. Thus ancient Greek won’t bother to devote much effort to build such a useless weapon. Nonetheless, the lecturer argues that since flaming arrows are usual weapons used so much, Roman soldiers were familiar with them and knew how to protect the ship from burning by flaming arrows. But on the other hand, it was extremely hard to predict where the burning mirror would fire the ship. Thus it is more effective to use a burning mirror than flaming arrows.

      托福TPO31綜合寫作閱讀材料

      A fossil skeleton of a dinosaur called Sinosauropteryx, preserved in volcanic ash, was discovered in Liaoning, China, in 1996. Interestingly, the fossil included a pattern of fine lines surrounding the skeletal bones. Some paleontologists interpret the lines as evidence that Sinosauropteryx had feathers. However, critics have opposed the idea that Sinosauropteryx was a feathered dinosaur, citing several reasons.

      First, the critics points out that the fine lines may not even represent functional structures of a living dinosaur, but rather structures that were formed after the animal’s death. After the animal died and was buried in volcanic ash, its skin may have decomposed into fibers. The skin fibers then became preserved as lines in the fossil; the lines were misinterpreted as evidence of feathers.

      Second, even if the fine lines are remains of real structures of a Sinosauropteryx, scientists cannot tell with certainty what part of the dinosaur’s anatomy the structures were. Many dinosaurs had frills, ornamental fan-shaped structures growing out of some parts of their bodies. Some of the critics argue that the lines surrounding the skeleton are much more likely to be fossilized remains of frills than remains of feathers.

      A third objection is based on the fact that the usual functions of feathers are to help animals fly or regulate their internal temperature. However, the structures represented by the lines in the Sinosauropteryx fossil were mostly located along the backbone and the tail of the animal. This would have made the structures quite useless for flight and of very limited use in thermoregulation. This suggests that the lines do not represent feathers.

      托福TPO31綜合寫作聽力材料

      The evidence that the lines in the Sinosauropteryx fossil represent feathers is very strong. The arguments of the critics are unconvincing.

      First, it is unlikely that the lines are a result of the decomposition of the dinosaur ’s skin, because we don’t see any such decomposition in the fossils of other animals buried at the same site. In fact, the fossils of many other animals buried at the site show evidence that their functional skin structures have been beautifully preserved in volcanic ash. The well-preserved condition of the other fossils makes it likely that the Sinosauropteryx’s lines are also well-preserved functional structures, possibly feathers, and that they are not fibers caused by decomposition.

      Second, the idea that the lines represent frills… well, there is an important chemical difference between feathers and frills. Feathers contain a great deal of a protein called Beta-keratin. Frills, on the other hand, do not contain beta-keratin. Our chemical analyses suggest that the Sinosauropteryx structures did contain beta-keratin. So that indicates that the structures were feathers, not frills.

      Third, feathers can be used for other functions than flight and thermoregulation. Think of a bird, like peacock, for example. The peacock has long, colorful feathers in its tail. And it displays its tail in order to attract a mate. That’s a distinct function of feathers called the display function. Recently, we have been able to do analyses on the Sinosauropteryx structures that show us that the structures were colorful. They were orange and white. The fact that they were colorful strongly supports the idea that they were feathers that this dinosaur use for display.

    【托福TPO31綜合寫作及材料原文】相關(guān)文章:

    托福綜合寫作材料12-05

    托福tpo23綜合寫作范文及原文材料11-07

    托福TPO17綜合寫作范文及材料原文06-04

    托福TPO18綜合寫作范文及材料原文05-29

    托福TPO26綜合寫作范文及材料原文05-29

    托福TPO16綜合寫作范文及材料原文08-29

    托福TPO24綜合寫作范文及材料原文09-13

    托福TPO28綜合寫作參考范文及原文材料03-26

    托福TPO22綜合寫作范文及材料原文(精選14篇)03-08

    主站蜘蛛池模板: 国产精品99久久久久久人| 久久99精品久久只有精品| 自拍中文精品无码| 精品福利一区二区三区| 99精品在线免费| 91精品国产91热久久久久福利 | 国产网红主播无码精品| 国产精品99久久久久久宅男| 国产精品莉莉欧美自在线线| 亚洲精品视频在线| 国产精品白丝AV嫩草影院| 午夜精品久久久久久影视777| 久久久久国产成人精品亚洲午夜| 亚洲精品国产精品国自产观看| 人人妻人人澡人人爽人人精品电影| 国产精品无码a∨精品| 国产精品久线在线观看| 国产精品秘入口福利姬网站| 亚洲精品无码乱码成人| 视频二区国产精品职场同事| 老司机精品影院91| 国产亚洲精品精华液| 精品精品国产国产| 国产精品无套内射迪丽热巴| 国产成人精品cao在线| 日韩精品无码一区二区三区免费| 日韩欧美精品不卡| 久久精品国产99久久无毒不卡| 99re国产精品视频首页| 久久久久亚洲精品无码网址 | 大胸国产精品视频| 久久精品18| 国产短视频精品一区二区三区| 日韩蜜芽精品视频在线观看| 99久久精品国产麻豆| 国产精品亚洲综合专区片高清久久久| 亚洲AV无码成人精品区天堂| 久久精品国产99国产精品| 欧美极品欧美精品欧美视频| 欲帝精品福利视频导航| 精品一久久香蕉国产线看播放|