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TOEFL
/
Listening practice
/ Section 8ZJE
Listen to an Academic Talk
Listen to part of a talk in a seismology class.
Listen
45. What does the speaker say about candidate warning signals?
A
They have occurred without earthquakes, and earthquakes without them
B
They appear too late to be useful
C
They are reliable for large shocks only
D
They can be detected only close to the fault