From paragraph 4 we can infer that _______ .
A the increasing concentration is certain to hurt consumers
B WorldCom serves as a good example of both benefits and costs
C the costs of the gobalization process are enormous
D the Standard Oil trust might have threatened competition
正确答案：D
选［D］本题属于推理类题目正确解答此题的关键是要正确理解第四段第二句话Itishardtoimaginethatthemergerofafewoilfirmstodaycouldre-createthesamethreatstocompetitionthatwere…whenthestardardoiltrustwasbrokenup这句话表明标准石油托拉期在一个世界以前有可能威胁竞争但今天的合并则不会hardtoimagine(很难想象)
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