(单选题)

It can be inferred from the context that the Achilles heel"(Line 1, Para.5) refers to ( ).

A.deadly weakness

B.problem unsolved

C.indisputable fact

D.potential risk

参考答案：A

参考解析：

含义题。出现短语的原句是：This so-so performance reflects the Achilles heel of Facebook’s business model, which the company clearly stated in a list of risk factors associated with its IPO. Achilles heel源于希腊神话传说，传说阿克琉斯战无不胜，但唯一致命弱点就是脚踝，最终被敌人抓住弱点并杀害。这句话说明Facebook的惨淡表现反映了其致命缺点，公司所陈述的关联IPO的一系列危险因素，B未解决的问题，C不可争执的事实，D潜在危险，故本题正确答案选A。

知识点：含义题英语阅读理解通用英语