单选题 Mark Moore, director of the Northwest Weather, warned skiers of the deadly avalanches that have ______ the mountains of Washington state, killing nine people.
【正确答案】 A
【答案解析】[解析] pummel“击，打”；elaborate“精心制作，详细阐述”；execute“执行，完成， 处死”；allege“宣称，断言”。