The success story of top investors and executives is a staple of business books and magazines.【C1】______research suggests we sho

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问题     The success story of top investors and executives is a staple of business books and magazines.【C1】______research suggests we should be cautious in【C2】______ourselves on extraordinary performers or【C3】______their much-praised methods; these saints may offer less wisdom than they【C4】______. Greater value can be found, studies show, in less dazzling but more【C5】______theories, and in the practices of those who are second best in the field.
    An article published in the Proceedings of the National Academies of Science【C6】______on experiments that modeled the results of a game played in many rounds. Over time, the most skilled players came to【C7】______a second tier of reliable competence. Those who succeeded spectacularly — who took their places in the first tier — were often not the most skilled,【C8】______were those who got some lucky【C9】______early on or took big risks that happened to【C10】______. Imitating these top performers would probably lead to【C11】______, since imitators would be unlikely to【C12】______their good fortune.【C13】______luck and risk play a dominant role in extraordinary outcomes, extreme success or failure are, at best, only weak【C14】______of skill, and top performers should not be imitated or praised. It’s better to learn from individuals with high, but not【C15】______, performance — those whose success can be【C16】______to solid skill and not to a rare lightning strike.
    By analyzing the characteristics of theories currently【C17】______, we may even be able to tell in advance which ones will turn out to be【C18】______useful additions, and which ones are here-today-gone-tomorrow trends.【C19】______with critical thinking skills and a healthy dose of skepticism, we can learn to【C20】______leaders and theories with the shiny look of success from those that offer the real thing.
【C14】

选项 A、signals
B、development
C、levels
D、management

答案A

解析 本题考查句内语义。空格所在部分为分句的表语,at best为插入语,插入在系动词are和表语之问;分句大意为“极端的成功或失败充其量也仅是技术的微弱……”。根据文意,此处是说明极端的成功或失败并不能体现技术水平,只有signal代入,表示“是技术的微弱体现”,符合文意。其他项代入,“技术的微弱进步、低水平的技术、对技术的糟糕管理”均无法与文意合理衔接。
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