摘要： [2010·保定市高三二模]-It is fine today. - .And a lovely day for an outing,isn t it? A.It is so B.So it is C.So is it D.It so is 3B考查so的替代功能.语境:--今天天气好.---的确天气好.是出游的好日子.不是吗?根据句意选B.

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