单选题 The market for processor chips is now a two-horse race, and Intel and AMD will probably alternate in technical leadership, suggests Nathan Brookwood of Insight 64 a research firm.
【正确答案】 A
【答案解析】解析：由题干中的“two—horse race”，可以断定此处是指AMD和Intel两家公司在电脑技术领导者的位置上轮流坐庄。B选项的含义是“克服”；C选项的含义是“退让”；D选项的含义是“结巴”。