【pierreisthin】評論
and their age-long ___15__:stability ___ over generations, centuries, and millennia – subject always to recurrent disruption by flood, famine, or war, but equally capable of rapid regeneration應選:(B) stability 長久穩定的人口數增長， 以因應洪水、飢荒或戰爭的反覆侵擾。