单选题 These circumstances were far from being ordinary and Smith had a ______ reason for being here personally.

【正确答案】 A

【答案解析】句意：这里的状况完全不在正轨上，史密斯先生有双倍的理由亲自参加。twofold两倍的。couple(一)双，(一)对。bilateral双边的。doubling加倍。