4. Active volcanoes are not only known to contain lava but also to_______ large amounts of carbon dioxide.(A) rave (B) emit (C) trot (D) grin
【一切有為法.如夢幻泡影】評論
(A) rave 狂歡(B) emit 釋放(C) trot 小跑(D) grin 咧嘴笑