单选题 The doctor assured me that the pain would______ one hour after I took the medicine.

【正确答案】 A
【答案解析】wear away意为“消逝，衰退”，符合题意：wear on表示“穿上，戴上”的意思：wear down v．意为“磨损，损耗，使疲劳，使厌烦，克服”： wear out意为“消瘦，穿破，用坏，克服，消磨．疲劳”。