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  3. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilt

Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilt

admin2016-10-29  168
问题 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 crusts, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.
选项 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
E、changes in measurements of the strain across a fault zone, and variations among
答案D
解析 A、B、C中动名词changing短语与前面未划线的名词词组在形式上不能形成平行结构；比较D、E，E中有两个毛病：(1)D中change短语中，in短语的核心词为strain，而E把核心词改为measurement，句意随之改变；(2)在某方面的变异用variation in sth．而不用介词among；正如本句“在某方面的变化”用change in strain一样。
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