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大全326题（OG62)
62. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth’s crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.
(A) changing the measured strain across a fault zone and varying
(B) changing measurements of the strain across a fault zone, and varying
(C) changing the strain as measured across a fault zone, and variations of
(D) changes in the measured strain across a fault zone, and variations in（D）
(E) changes in measurements of the strain across a fault zone, and variations among
D, the best choice, describes the warning signs in parallel phrases. Despite surface appearances, the nouns changes and variations are parallel with tilting, but the verbal forms changing and varying in A, B, and C are not: tilting, one of the deformations of the Earth’s crust, is used here as a noun that is parallel to fluctuations, whereas changing and varying are used as verbs indicating some action undertaken. Moreover, these verbs are used incorrectly because the sentence mentions no subject that is performing these actions.
看过以前的讨论 TIANWAN斑竹说
the warning signs for a major earthquake 是主语，所以后面的分词只能用中心词signs作逻辑主语。
OG的解释说因为两个分词的动词没有动作发出者
所以
不能认为划线前是一个AND链接的三项名词并列结构，而划线部分是分词形式作表结果的伴随状语。
我的问题是，由此是不是在句末做伴随状语的成分的动作发出者必须是句子主语？因为我觉得可以理解为sudden fluctuations和tilting and other deformations 是动作的发出者啊？ | 
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发表于 2006-2-6 10:01:00
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