[解析]
(1)A.细节理解题.根据文章第二段Any scientist who is not a pretender will admit the important part that luck plays in scientific discovery可知实验结果表明幸运在科学发现中占一小部分;故选A.
(2)D.细节理解题.根据文章第三段 but if we describe such an event as luck,what word shall we use to describe the accidental discovery of a lottery ticket that turns out to be the winning one just on a park bench可知运气是被用来描述在科学上偶然发现的最好的词;故选D.
(3)C.细节理解题.根据文章第四段have enormously enlarged their awareness﹣their candidacy for good fortune﹣and will now take into account evidence of a kind that a beginner or a casual observer would probably overlook or misinterpret可知作者暗示一个科学家通过"好运"来实现可以进行足够的实验以提高成功的统计概率;故选C.
(4)D.推理判断题.根据文章最后一段If these efforts lead to a discovery,then I think it would be inappropriate to credit such a discovery to luck可知本章的主要目的是讨论运气在科学中的作用;故选D.