【题目】As is well known, many deadly accidents carelessness and irresponsibility.
A. lead to B. result from
C. contribute to D. result in
在线课程【答案】B
【解析】
考查动词短语辨析。句意：众所周知，许多致命的事故都是由粗心大意和不负责任造成的。题干中表示“由……造成”，A. lead to导致；B. result from由……造成；C. contribute to有助于；D. result in导致，故选B。