GMAT考题：OG2018-SC-747

GMAT考题

题库 / OG2018-SC-747

Researchers studying the brain scans of volunteers who pondered ethical dilemmas have found that the basis for making tough moral judgments is emotion, not logic or analytical reasoning.

the brain scans of volunteers who pondered ethical dilemmas have found that the basis for making tough moral judgments is

the brain scans of volunteers who pondered ethical dilemmas and found the basis to make tough moral decisions to be

the brain scans of volunteers pondering ethical dilemmas and found that the basis for making tough moral decisions is

volunteers' brain scans while pondering ethical dilemmas have found the basis to make tough moral judgments to be

volunteers' brain scans while they pondered ethical dilemmas have found that the basis for making tough moral judgments is

考题讲解

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题目分析：
本题比较长，语法结构略显复杂：
Researchers studying the brain scans of volunteers who pondered ethical dilemmas have found that the basis for making tough moral judgments is emotion, not logic or analytical reasoning.
两个划线的部分是各自先行词的定语，不是主干。

选项分析：

A选项：Correct. 本选项在语法和逻辑上均是正确的。

B选项：and是连词，必须连接两个句子。但是在本选项中，and身前的小句缺少谓语动词。（本选项中的to make应该改为for making，考查了“不定式和ing的区别”。很容易判断。）
另外，在found这句话中，本选项可以看作：
Researchers found the basis to be emotion.
其应该改为：
Researchers found that the basis is emotion.
这点考查了“不定式和从句的区别”。用之于本题，显然谓语动词find的控制力很弱，应该用宾语从句。

C选项：and身前没有谓语动词错误同(B)。

D选项：Researchers found the basis to be emotion应改为Researchers found that the basis is emotion错误同选项(B)。本选项中的 while pondering ethical dilemmas是伴随状语，这分词短语前添加连词形式的伴随状语非常常见，万不能判断为错。

E选项：代词they的指代对象在语法上只能是researchers，因为volunteers’已经是所有格了，变为了形容词，不能被代词指代。但是they在逻辑上应该指的是志愿者。