Fierce as they are, beasts like tigers and lions usually do not ______ to violent killing unless they are very hungry.
 
【正确答案】 C
【答案解析】 固定搭配。prefer to“更加喜欢;宁愿”;alternate to“替代……”;resort to“求助于;诉诸”;confront to“正视,正对”。空格短语的宾语为violent killing,结合选项,C符合语境。句意为:尽管像老虎和狮子一样的野兽很凶猛,但是除非非常饥饿,它们通常不会诉诸暴力的杀戮。故答案为C。