【单选题】The village is_____the foot of the mountain.
【单选题】The village is ____ the foot of the mountain. A. at B. in C. from D. under
【单选题】血培养瓶中加SIS,除作为抗凝剂外,还可用于拮抗下列哪种抗生素
【单选题】克拉霉素为下列哪种结构类型的抗生素()。
【单选题】The village is located _______ the foot of the mountain. A. in B. on C. to D. at
【单选题】从母体得到的铁剂可供小儿使用的时间是( )