第28题: [单项选择]Any earthquake that takes place in any area is certainly regarded as a kind of a ______event. A. cholesterol B. charcoal C. catastrophic D. chronic 参考答案:C 答案解析:[解析] 本句空格处意为“一种灾难性的事件”。catastrophic“悲惨的,灾难的”符合句意。其他选项cholesterol“胆固醇”,charcoal“木炭”,chronic“慢性的”都不正确。