It has been found that even people insensitive to a certain smell______can suddenly become

学历类 2018-03-10 04:03:21 专四已帮助人

It has been found that even people insensitive to a certain smell______can suddenly become sensitive to it when exposed to it often enough.

A．at large

B．at last

C．at least

D．at first

请帮忙给出正确答案和分析，谢谢！

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正确答案：D
本题考查at的短语辨析。atlarge意为“详细地”；atlast意为“最终，最后”；atleast意为“至少”；atfirst意为“首先，最初”。根据句意，应选D。