托福听力荟萃 05

One reason_______analyze the_______on the ocean floor is to seehow long-term changes in Earth's temperature have affected² the depth of theocean. By analyzing³ the remains⁴ of sea animals in old layers of ocean sediment⁵,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 glaciers⁸ begin tomelt, it is urgent for us to know precisely⁹ how high sea levels will rise as aresult.

 

 

【填空答案】

oceanographer: n. ［C］海洋学者，海洋研究者

sediment: n. ［C］沉淀物

evaporated v.蒸发，消失

frozen vt. 结冰

continental¹⁰ adj.大陆的

glacier⁷: n. ［C］冰河

drain: v. 排出，排水

pollutant¹¹: n. ［C］污染物质

【听力原文】

One reason oceanographers analyze¹ 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 analyzed⁶ 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 pollutants¹² 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.

1 analyze   

vt.分析，解析 (=analyse)

参考例句：

• We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
• The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。

2 affected   

adj.不自然的，假装的

参考例句：

• She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
• His manners are affected.他的态度不自然。

3 analyzing   

v.分析；分析( analyze的现在分词 )；分解；解释；对…进行心理分析n.分析

参考例句：

• Analyzing the date of some socialist countries presents even greater problem s. 分析某些社会主义国家的统计数据，暴露出的问题甚至更大。 来自辞典例句
• He undoubtedly was not far off the mark in analyzing its predictions. 当然，他对其预测所作的分析倒也八九不离十。 来自辞典例句

4 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

5 sediment   

n.沉淀，沉渣，沉积(物)

参考例句：

• The sediment settled and the water was clear.杂质沉淀后，水变清了。
• Sediment begins to choke the channel's opening.沉积物开始淤塞河道口。

6 analyzed   

v.分析( analyze的过去式和过去分词 )；分解；解释；对…进行心理分析

参考例句：

• The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
• The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》

7 glacier   

n.冰川，冰河

参考例句：

• The glacier calved a large iceberg.冰河崩解而形成一个大冰山。
• The upper surface of glacier is riven by crevasses.冰川的上表面已裂成冰隙。

8 glaciers   

冰河，冰川( glacier的名词复数 )

参考例句：

• Glaciers gouged out valleys from the hills. 冰川把丘陵地带冲出一条条山谷。
• It has ice and snow glaciers, rainforests and beautiful mountains. 既有冰川，又有雨林和秀丽的山峰。 来自英语晨读30分（高一）

9 precisely   

adv.恰好，正好，精确地，细致地

参考例句：

• It's precisely that sort of slick sales-talk that I mistrust.我不相信的正是那种油腔滑调的推销宣传。
• The man adjusted very precisely.那个人调得很准。

10 continental   

adj.大陆的，大陆性的，欧洲大陆的

参考例句：

• A continental climate is different from an insular one.大陆性气候不同于岛屿气候。
• The most ancient parts of the continental crust are 4000 million years old.大陆地壳最古老的部分有40亿年历史。

11 pollutant   

n.污染物质，散布污染物质者

参考例句：

• Coal itself is a heavy pollutant.煤本身就是一种严重的污染物。
• Carbon dioxide may not be a typical air pollutant.二氧化碳可能不是一种典型的污染物。

12 pollutants   

污染物质（尤指工业废物）( pollutant的名词复数 )

参考例句：

• Pollutants are constantly being released into the atmosphere. 污染物质正在不断地被排放到大气中去。
• The 1987 Amendments limit 301(g) discharges to a few well-studied nonconventional pollutants. 1987年的修正案把第301条（g）的普通排放限制施加在一些认真研究过的几种非常规污染物上。 来自英汉非文学 - 环境法 - 环境法