听力填空

托福老托精听第四天~我是AmyLee，本听力材料来自于老托partb，partc，是公认实施有效的听写材料，对于上手托福时间不长的同学非常适合。我曾经一次短时间备考听力提高了7分也归功老托。希望大家和我一样一定要坚持下来噢。相信坚持学习的同学听力上都会有很大的飞跃！
No pain, no gain.我们的安排是这样的，第一遍用听力软件精听材料（建议做单句听写，听写的时候不要偷看我给的挖空题），然后按照我给的挖空题填关键词，回复后即可看到听力原文和文章精解，我将把难点和易错点one by one 分析给大家。

回复填空答案格式如下：1____2____3____...et.al.

One reason_______analyze the_______on the ocean floor is to seehow long-term changes in Earth's temperature have affected the depth of theocean. 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'veanalyzed hundreds of such layers, including some from the coldest periods ofEarth'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 droppedby about four hundred feet. Water from the ocean________and became______ in_______,_______,so it didn't______back into the ocean. When temperatures eventually rose again, the glaciersmelted, and the oceans returned to their former depths. Analysis of sedimentarydata indicates that periods of glacial freezing and melting occurred in regularcycles of twenty thousand, forty thousand, and one hundred thousand years.Oceanographers are interested in the history of seawater levels because theyhope to use this historical data in order to predict the possible effect thatglobal warming could have on seawater levels. If industrial_______are capable of heating global temperatures to the point that glaciers begin tomelt, it is urgent for us to know precisely how high sea levels will rise as aresult.

答案原文

【填空答案】

1. oceanographer: n. ［C］海洋学者，海洋研究者
2. sediment: n. ［C］沉淀物
3. evaporated v.蒸发，消失
4. frozen vt. 结冰
5. continental adj.大陆的
6. glacier: n. ［C］冰河
7. drain: v. 排出，排水
8. pollutant: n. ［C］污染物质

【听力原文】

One reason oceanographers analyze the sediment on the ocean floor is to see how long-term changes inEarth's temperature have affected the depth of the ocean. By analyzing theremains of sea animals in old layers of ocean sediment, oceanographers can determinethe 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. Whatthey've found is that during the ice ages, the amount of water in the oceansdecreased. Water levels in the ocean dropped by about four hundred feet. Waterfrom the ocean evaporated and became frozen in continental glaciers, so itdidn't drain back into the ocean. When temperatures eventually rose again, theglaciers melted, and the oceans returned to their former depths. Analysis ofsedimentary data indicates that periods of glacial freezing and meltingoccurred in regular cycles of twenty thousand, forty thousand, and one hundredthousand years.
Oceanographers are interested in the history of seawater levels because theyhope to use this historical data in order to predict the possible effect thatglobal warming could have on seawater levels. If industrial pollutants arecapable 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 aresult.

听力精解

【听力精解】

第一句句子比较长，但是意群是比较好划分的，首先同志们要注意里边有一个生词sediment,其实这个词昨天就碰到了，你是否注意到了应经认识了呢，昨天出现的时候是sediment，再需要注意的就是整个句子的结构问题哦。很多同学在这个句子上都弄错了。
old layers of ocean sediment，有了前面的铺垫，当我们听到这个短语的时候，应该会反应过来，这个是沉积岩岩层的意思，也有一些同学对这个翻译的不准确。
3、Water from the ocean evaporated and becamefrozen in continental glaciers, so it didn't drain back into the ocean.这一句里边结构不复杂，但是有几个单词需要注意下，首先是evaporate,这个在托福单词红宝书里边是有的，蒸发的意思。frozen意思是结冰，而drain是排走、排水的意思，在文中的意思是流回海洋。
4、Oceanographers are interested in the historyof seawater levels because they hope to use this historical data in order topredict the possible effect that global warming could have on seawater levels.这一句句子虽长，但是结构并不复杂，在听力的同时首要的就是弄清楚句子结构，不要被一个特别长的句子吓到。
5、最后一个难点就是最后一句了，it is urgent for us to know precisely howhigh sea levels will rise as a result.很多同学在这一句上犯了小错误。中文译本是确切了解海平面最终会上升到什么高度是非常要紧的。

【参考译文】

海洋学家们之所以对海底沉积物进行分析，其中一个原因是为了观察地球温度的长期变化是如何对海洋深度造成影响的。通过分析远古时期形成的海底沉积层中海洋动物的残骸，海洋学家们能够确定过去海洋的深度。他们已经分析了数百种这样的沉积层，包括地球历史上最冷的时期——冰河期形成的沉积层。他们发现，在冰河期，海洋里的水量有所减少。海平面下降大约400英尺。海水蒸发，形成大陆冰川，因此无法流回海洋。最后，当气温再度回升，冰川融化，海洋恢复到之前的深度。对沉积物进行分析后得出的数据表明：冰川形成和融化的时期按照两万年、四万年、十万年的周期循环规律地发生。
海洋学家们对于海水的历史很感兴趣，因为他们希望通过历史数据预测全球变暖对于海平面可能造成的影响。如果工业污染物能让全球温度上升到让冰川融化的程度，对我们而言，确切了解海平面最终会上升到什么高度是非常要紧的。

好了，今天的文章分析完了，第一周快过去了，准备整理一下学过的东西吧，加油，坚持就是胜利！
祝大家每天进步一点点！