45 EMTs were using the automated external defibrillators (AEDs) at the scene to revive people
suffering from _______ .
(A) bone fracture
(B) asthma
(C) cardiac arrest
(D) food poisoning
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統計: A(6), B(36), C(111), D(5), E(0) #2940389
統計: A(6), B(36), C(111), D(5), E(0) #2940389