Which of the following questions can NOT be detected by Tcells?-考呗网题库移动版

单选题 Which of the following questions can NOT be detected by Tcells?

A．Thymus
B．Transplants
C．Cancer ceils
D．Healthy cells

参考答案A

解析: 推断题。根据题于关键词T cells可以迅速找到其在原文中的出处，即全文最后一段。特别是根据该段段首句“T ceils have one terrific talent：they can tell the difference between friend and fee’’可知Tcells可以区别敌人和朋友。而且该段下文中指明了朋友是Healthy cells，敌人是transDlants和our own cellswhich have become abnormal，as in the case of cancer。因此，B、C、D三个选项都是T cells可以察觉到的：只有A选项既不是敌人也不是朋友，而是颈部的一个器官。

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