【单选题】含士的宁等生物碱类成分的天然药物是( )
【单选题】I often do exercise ______ the morning, but ______ Sunday morning I watch TV. [ ]
【简答题】热扎带肋钢筋的强度等级代号有()、()和()三个。
【单选题】中度失血或失血量少于ml应挂()伤情识别卡
【单选题】---Do you often watch CBA games? ---Sure, and _______I watch them play in the gym.