If memories failed to fade, ______.

参考答案:

adaptive ability would sufferadaptive ability would suffer 解析：细节题。第三段段首有这样一句话：In thinking about the evolution of memory together with all its possible aspects, it is helpful to consider what would happen if memories failed to fade. (想到记忆力发展的方方面面，我们就会明白如果记