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
(E) changes in measurements of the strain across a fault zone，and variations among
fluctuation in local seismic activities, tilting of the Earth's crust, changes in the measured strain across a fault zone, and variations in the electrical properties of underground rocks.
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发表于 2016-7-23 14:46:38
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