If scientists can flesh out the new findings during future earthquakes—a two-year study at the same seismically active location begins this September—it could form the basis of a vastly improved early-warning system for quakes．Current earthquake-warning systems give just a few seconds’ notice because they detect only P-waves，the fast-moving seismic waves that precede the more destructive waves released during a quake．Upgrading to a seismic stress meter，however，is still a long way off．

　　1．The author wrote this passage to tell us something about ________．

　　A．a traditional way of predicting earthquakes

　　B．the importance of predicting earthquakes

　　C．a new way of predicting earthquakes

　　D．the damages caused by horrible earthquakes

　　2．According to the passage，we can infer that the traditional way of predicting earthquakes ________．

　　A．costs much more than the new one

　　B．produces accurate information

　　C．does not provide enough time for people to escape

　　D．is less accurate than the new one

　　3．The new way mentioned in the passage predicts earthquakes by ________．

　　A．measuring the changes of the P-waves

　　B．looking for the epicenter closest to the sensors

　　C．watching the movements of rocks above the ground

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