阿摩線上測驗
45 Firefighters are ________ extensively trained in firefighting, primarily to extinguish hazardous fires that threaten property and civilian or natural populations.
(A)investigators
(B)negotiators
(C)rescuers
(D)waiters
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統計： A(0), B(1), C(1), D(0), E(0) #3459789
統計： A(0), B(1), C(1), D(0), E(0) #3459789
