40. Polluter means a vessel ______ harmful substances into the air. Which word below is
appropriate to fill in the blank?
(A) spilling
(B) spreading
(C) emitting
(D) injecting
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統計: A(46), B(35), C(159), D(16), E(0) #2652724
統計: A(46), B(35), C(159), D(16), E(0) #2652724