单项选择题

The significance of the slow speed of tsunamis is that people may ______.

A．notice them out at sea
B．find ways to stop them
C．be warned early enough
D．develop warning systems
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单项选择题
The destruction of Agadir is an example of______.
A．faulty building construction
B．an earthquake’s strength
C．widespread panic in earthquakes
D．ineffective instruments
单项选择题
If your are a patient, you take on all the following roles EXCEPT the role as______.
A．a friend of your fellow patients
B．a staff member of the hospital
C．the receiver of the treatment
D．a buyer of medicines
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