单选题 The combined evidence of history and ecology seems to support one general deduction : the less violent the man made changes, the greater the probability of successful readjustment in the biotic pyramid.
【正确答案】 A
【答案解析】[解析] 句意：综合历史学和生态学两方面的证据似乎可以得出这样一个基本论推：在进行变革的过程中，人们的暴力程度越低，他们在生命的金字塔上成功适应的可能性就越大。deduction推论。inference推断，推论。induction归纳。hypothesis假设。speculation推测。