常用于新生儿窒息及一氧化碳中毒的是：
A．咖啡因B．哌醋甲酯C．尼可刹米D．山梗菜碱E．贝美格
参考答案：D
In the near future, China will increase supply of smaller houses, to help low-income families to buy houses of their own.
A．aims
B．being aimed
C．aiming
D．having aimed
下列关于鸭病毒性肝炎的描述，正确的组合是（）①以1周龄以内雏鸭死亡率最高；②临床表现为角弓反张；③剖检见肝肿大和大量的出血性斑点；④病原有二个血清型。
A.①②
B.①②③
C.①③
D.①②③④
