【单选题】【消耗次数：1】
断面黄白色或淡黄棕色，皮部厚，有裂隙及多数棕色点状分泌腔，木部色较淡，形成层环黄棕色。有浓郁的香气，味甘、辛、微苦。该药材是
①
柴胡
②
前胡
③
白芷
④
防风
⑤
当归
参考答案：
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