新东方网留学托福首页托福辅导托福听力正文

老托福听力PartC精选第56期(英文原文+音频)

2014-08-13 13:37

来源:新东方网整理

作者:

  老托福听力93篇难度虽然比现在的机考要简单一些, 不过,用这个难度训练已经足够了。而且是跟真题最相似的,因为它根本就是真题~

  大家要做的就是, 每天跟读1-2篇。1-2个小时吧。 模仿听力原文的语音语调以及断句(如果能背下来, 那当然更好)。(跟读的时候要照着文本) 需要注意的是,刚开始最好是一句一暂停的模仿,不要通篇模仿,否则很难跟上。

  然后,第二天要做的事情是把前一天模仿好的文章录下来(电脑-附件-录音机),然后你自己听一听,和原文对比一下。就能找到自己的不足。

  如此坚持,2-4周一定见效。此法既练了口语,又同时练习了听力。

  One reason oceanographers analyze the sediment on the ocean floor is to see how long-term changes in Earth's temperature have affected the depth of the ocean. By analyzing the remains of sea animals in old layers of ocean sediment, oceanographers can determine the depth of the ocean in the past. They've analyzed hundreds of such layers, including some from the coldest periods of Earth's history—the ice ages. What they've found is that during the ice ages, the amount of water in the oceans decreased. Water levels in the ocean dropped by about four hundred feet. Water from the ocean evaporated and became frozen in continental glaciers, so it didn't drain back into the ocean. When temperatures eventually rose again, the glaciers melted, and the oceans returned to their former depths. Analysis of sedimentary data indicates that periods of glacial freezing and melting occurred in regular cycles of twenty thousand, forty thousand, and one hundred thousand years. Oceanographers are interested in the history of seawater levels because they hope to use this historical data in order to predict the possible effect that global warming could have on seawater levels. If industrial pollutants are capable of heating global temperatures to the point that glaciers begin to melt, it is urgent for us to know precisely how high sea levels will rise as a result.

  【生词摘录】

  1. oceanographer: n. [C]海洋学者,海洋研究者

  2. sediment: n. [C]沉淀物

  3. glacier: n. [C]冰河

  4. drain: v. 排出,排水

  5. pollutant: n. [C]污染物质

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