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新SAT阅读科学类篇章介绍

2018-04-29 08:24 三立在线 admin

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摘要:本文为大家整理了新SAT阅读科学类篇章介绍,想要取得SAT高分,建议加入三立在线SAT微信群,三立在线名师24小时在线,有问必答,还可免费领取SAT备考资料大全,还等什么,快快加入吧。

 

  新SAT阅读的五篇文章中会有两篇科学类的篇章。科学类的篇章包括物理,生物,天文学,化学等等。可能带有图表,也可能出现在双篇文章中。

  科学类的篇章一般包括两种:Explanatory(说明文)和 Argumentative(议论文)。

  Explanatory passages will provide information about a topic. Their purpose is simply to inform the reader. (说明文提供信息,目的是介绍信息)

  Argumentative passages will take a certain position on a issue, and provide additional information as evidence to support that position. (议论文有观点,并提供相关论据进行论证)

  与文学类篇章注重修辞,叙述和描述的要点不同,科学类篇章更加侧重细节事实的传达(说明文中),或者对作者论点的论证(议论文中)。

  议论文要点 (Elements of an Argument)

  Thesis 论点:The main idea that the author is defending with his/her argument. 可能出现在开头,也可能不是。论点是整篇文章支持的观点。

  Claims 观点、论断:作者认为正确的论述。

  Supporting Evidence 论据:包括研究数据,专家语录,例子,或其他事实和论述。

  Counterclaims and refutations 反观点和反驳

  Conclusion 结论

  Example:

  Europa, a moon of Jupiter, is the place where we are most likely to find extraterrestrial life in our own solar system (Claim观点句:木卫二是最有可能存在地外生命的星球). Liquid water is widely considered to be one of the most important preconditions for life, and there are likely vast oceans of liquid water beneath Europa's surface(Supporting Evidence:木卫二地下可能存在大量液态水). Certain organic chemicals are also considered necessary precursors for life, and we have reason to believe that natural processes on Europa's surface create them in abundance (Supporting Evidence:木卫二存在有机化学物). Given that sunlight is the main source of energy for life on Earth, it may seem that Europa's thick icy crust, which prevents any sunlight from reaching the ocean, would make life on the moon impossible (Counterclaim:木卫二的冰层阻止太阳能量照射到木卫二的海洋). But there is an alternative source of energy on Europa: tidal flexing, a process in which gravitational tugs cause Europa's oceans to slosh about, generating heat and energy(Refutation of the Counterclaim:潮汐能导致木卫二海洋产生热量和能量). With its suitable environment, and sources of the chemicals and energy necesary for life, it would surprise me more to find that Europa was barren than to discover life beneath its crust(Conclusion:非常确信木卫二上有生命).

  科学类篇章也会经常讨论具体的实验。关于实验,就要注意到实验的变量(variables)以及调整变量产生的相对应的结果。

  科学类篇章的结论是中性的(value neutral), 没有好坏或褒贬。例如,实验表明植物接受更多阳光,长得更快。这并不意味着我们要给植物更多的阳光,或植物需要更多的阳光。

  上面整理的就是新SAT阅读科学类篇章介绍,希望对大家考试有帮助。建议大家加入SAT考试微信群,及时了解最新考试动态,进群就免费送历年SAT真题、机经、备考资料大全!关于本文有任何疑问,请和三立在线在线专家联系。

       

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