1. [单选题]直接激动M、N受体的是
A. 毛果芸香碱
B. 乙酰胆碱
C. 孔筒箭毒碱(tubocurarine)
D. 烟碱
E. 阿托品
2. [多选题]蒙医用药法规定。应从小剂量试服至常用量的有（ ）。
A. 有毒类药
B. 峻烈类药
C. 过寒性药
D. 过热性药
E. 中性类药
3. [单选题]请根据以下内容回答 60～64 题
A. An organ of higher plants， usually subterranean and having several functions，including the absorption and conduction of water and dissolved minerals， food storage，and anchorage of the plant in the soil. It is distinguished from the stem by its structure，by the manner in which it is formed， and by the lack of such appendages as buds and leaves.
B. It grow horizontally， as a food-storing organ， beneath the surface of the ground， and enables a plant to reproduce itself.It has nodes， buds，and tiny leaves and does not die when cut； replanted， it yields new plant.
C. both A and B
D. neither A nor B
E. 第 60 题 一种起运输作用的器官是（ ）
