单选题 The prevailing union of passionate interest in detailed facts with equal devotion to abstract generalization is a hallmark of our present society; in the past this union appeared, at best, ______and as if by chance.
【正确答案】 B
【答案解析】解析：sporadically“偶然地，偶发地”；intuitionally“直觉地”；cyclically“循环的”；opportunely“及时地，恰好地”。根据句意，本题正确答案为B。