某药材其根茎粗短,下生数条根,表面棕红色,质硬脆。断面皮部棕红色,木部灰黄色显放射状 发布时间:2018-01-02 13:12 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某药材其根茎粗短,下生数条根,表面棕红色,质硬脆。断面皮部棕红色,木部灰黄色显放射状纹理,此为( )A.甘草B.龙胆C.黄连D.丹参E.南板蓝根
题型:单项选择题 I think _____ is very important for students to study by themselves in the school or at home.A. it B. this C. that 查看答案