2014年托福考试精选练习及答案(第一套)_第2页

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　　Generally speaking, the interiors of plates are geologically uneventful. However, there are exceptions. A glance at a map of the Pacific Ocean reveals that there are many islands far out at sea that are actually volcanoes—many no longer active, some overgrown with coral—that originated from activity at points in the interior of the Pacific Plate that forms the Pacific seafloor.

　　Q3 Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information

　　A. Volcanic activity is responsible for the formation of the Pacific seafloor in the interior of the Pacific Plate.

　　B. Many volcanoes in the Pacific Ocean are no longer active and have become islands that support coral.

　　C. There are many islands in the Pacific Ocean that originated as volcanoes in the interior of the Pacific Plate.

　　D. The map of the Pacific Ocean reveals fewer volcanic islands than there truly are because many are no longer active and some are completely overgrown with coral.

　　确定句子核心信息

　　A glance at a map of the Pacific Ocean reveals that there are many islands far out at sea that are actually volcanoes—many no longer active, some overgrown with coral—that originated from activity at points in the interior of the Pacific Plate that forms the Pacific seafloor.

　　分析：通过确定核心信息，我们看到该句最基本的结构是主语(A glance)+谓语动词(reveals)+宾语从句(that…)。该句的难点在于宾语从句里有两个定语从句的嵌套，在句中已用蓝色标出，第一个定语从句是对many islands进行限定修饰;第二个定语从句是对volcanoes进行限定修饰，而破折号中间的成分则是对volcanoes这个信息的补充说明，与句子核心信息关系不大，可忽略不看。

　　理解大意

　　中文翻译：看一眼太平洋的地图就能发现在远离海岸的海洋里有许多其实是火山的岛屿，这些火山起源于形成太平洋海床的太平洋板块内部一些点的活动。

　　核对选项

　　A. Volcanic activity is responsible for the formation of the Pacific seafloor in the interior of the Pacific Plate.

　　A选项句子主语是火山活动，而原句讲的是岛屿，核心信息缺失。

　　B. Many volcanoes in the Pacific Ocean are no longer active and have become islands that support coral.

　　B选项句子主语是火山，且后面有信息no longer active不再活跃，这是原句完全没有出现的信息。

　　C. There are many islands in the Pacific Ocean that originated as volcanoes in the interior of the Pacific Plate.

　　C选项大意为：太平洋里有许多岛屿，这些岛屿起源于太平洋板块内部的火山。与原句意思最贴切。

　　D. The map of the Pacific Ocean reveals fewer volcanic islands than there truly are because many are no longer active and some are completely overgrown with coral.

　　D选项中有比较结构fewer…than…，这在原句中也是完全没有出现的。

　　故正确答案选择C。