Fromparagraph4wecaninferthat_______.
Atheincreasingconcentr ationiscertaintohurtconsumers
BWorldComservesasagoodexampleofbothbenefitsandcosts
Cthecostsofthegobalizationprocessareenormous
DtheStandardOiltr ustmighthavethreatenedcompetition
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…,whenthestardardoiltr ustwasbrokenup。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)"。
