托福

长按二维码,轻松关注托福免费模考微信公众号

轻轻一按,托福水平早知道

轻轻一问,名师助你来备考

托福阅读事实信息题合集之tpo1-3

信息来源:网络  发布时间:2015-05-27

  托福阅读事实信息题是阅读考试中比重常见的一种题型,tpo则是托福阅读备考最权威的材料,所以托福小编综合二者,为大家集中整理了tpo阅读中考察的事实信息题及其对应的解析,供大家参考使用。本文带来的是tpo1-3的事实信息题,一起来看看吧。

  TPO1-3 Groundwater

  Paragraph 2

  The necessary space is there, however, in many forms. The commonest spaces are those among the particles—sand grains and tiny pebbles—of loose, unconsolidated sand and gravel. Beds of this material, out of sight beneath the soil, are common. They are found wherever fast rivers carrying loads of coarse sediment once flowed. For example, as the great ice sheets that covered North America during the last ice age steadily melted away, huge volumes of water flowed from them. The water was always laden with pebbles, gravel, and sand, known as glacial outwash, that was deposited as the flow slowed down.

  4. According to paragraph 2, where is groundwater usually found?

  ○Inside pieces of sand and gravel

  ○On top of beds of rock

  ○In fast rivers that are flowing beneath the soil

  ○In spaces between pieces of sediment

  解析:问的是地下水在哪儿最经常在哪儿发现,找到第二句中的the commonest spaces are……最常见的地方是blablabla,这个blablabla就是我们要的答案。在那些颗粒之间的空隙里,所以首先正确的答案应该是space,答案D是正确的

  【2】然而,地下水所需的储存空间多种多样。松散的砂子和砾石间有许多颗粒,如沙粒和小石子,它们之间的孔隙是最常见的储存地下水的空间。由这些颗粒组成的水床非常普遍,通常位于看不见的土壤下方,在携带粗糙沉淀物的湍急的河流曾流过的地方都能找到它们的踪迹。比如,冰河时代覆盖北美的巨大冰层逐渐融化,大量水从那儿流出。水里总会携带些石子、砾石和沙石,这些颗粒会随着水流的减速而沉淀,这就是所谓冰河期的冰水沉积。

  Paragraph 6 Thus a proportion of the total volume of any sediment, loose or cemented, consists of empty space. Most crystalline rocks are much more solid; a common exception is basalt, a form of solidified volcanic lava, which is sometimes full of tiny bubbles that make it very porous.

  Paragraph 7 The proportion of empty space in a rock is known as its porosity. But note that porosity is not the same as permeability, which measures the ease with which water can flow through a material; this depends on the sizes of the individual cavities and the crevices linking them.

  10. According to paragraphs 6 and 7, why is basalt unlike most crystalline forms of rock?

  ○It is unusually solid

  ○It often has high porosity.

  ○It has a low proportion of empty space.

  ○It is highly permeable.

  解析:以crystalline rock和basalt为关键词定位至第六段的最后一句,原文说大部分crystalline rock是固化比较好的,但basalt是个例外,说basalt更加porous,孔隙率更高,所以B正确

  【6】因此,不管沉积物是疏松还是坚固,它们中一定有空间。大部分结晶体岩石都非常坚硬,但也有例外,最常见的就是玄武岩,它是一种固化的火山熔岩,经常充满了微小气泡,从而变得十分多孔。

  以上就是托福阅读tpo1-3中的事实信息题及其解析,大家可以在备考的时候参考复习,希望能够帮助大家的考前准备。最后前程百利祝大家都能取得理想的托福考试成绩。

  您还可能关注:

  免费在线模考系统

  托福117分高分经验分享

  GRE322分高分经验分享 

分享到:

相关推荐

托福阅读事实信息题合集之tpo1-2

托福阅读事实信息题合集之tpo1-1

托福阅读背景文化资料合集

托福考试