参考答案

正确答案：C
解析：语义理解题。从第一段中的“Every family cultivates its vendetta；every clan，its feud．The numerous tribes and combinations of tribes all have their accounts to settle with one another．Nothing is ever forgotten，and very few debts are left unpaid，”可以看出，各部落和家族之间都存在世仇宿怨，并且冤家难解，因此必然会形成怨怨相报的恶性循环局面，故答案为C。所以正确答案是C选项。