单选题 The magician picked several persons _____ from the audience and asked them to help him with theperformance.无
【正确答案】 B
【答案解析】句意:魔术师随便在观众中挑选了几个人, 让他们帮助他完成表演。 at random胡乱地; 随便地; 任意地。 by accident偶然; 意外地。 on occasion有时; 偶尔。 on average平均; 普通; 通常。