Although it is _____ a teenage problem, acne can occur in early childhood.
【正确答案】 D
【答案解析】解析:考查副词词义辨析。predominantly意为“大多数,主要地”,符合语境。subsequently意为“随后,后来”;successively意为“连续地,逐次地,接连地”;predictably意为“不出所料,可以想见”。