33.The longer an oil fire burns, the .
(A)harder it is to be extinguished
(B)easier it is to be extinguished
(C)less chance there is of reignition
(D)easier it is to be controlled
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統計: A(50), B(16), C(10), D(5), E(0) #1333559
統計: A(50), B(16), C(10), D(5), E(0) #1333559