4. A cloud of ________ fumes drifted from the industrial complex, causing residents to evacuate the area immediately as it could be toxic.
(A) uncouth
(B) sinuous
(C) frigid
(D) noxious
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統計: A(0), B(5), C(1), D(18), E(0) #3438376
統計: A(0), B(5), C(1), D(18), E(0) #3438376