人工被动免疫是通过注射下列哪些物质而获得（）
A.抗毒素
B.胎盘球蛋白
C.丙种球蛋白
D.特异性免疫球蛋白
E.灭活疫苗
参考答案：A, B, C, D
母畜生殖器官包括有：卵巢、输卵管、（）、（）和尿生殖前庭、阴唇、阴蒂。
Why did Mr. Putin initially fear a terrorist act caused the explosion
A．Because Russia did something wrong and he was afraid that someone would wreak it.
B．Because the "911 event" had just passed, he was afraid that the terrorist would do something against Russia.
C．Because he thought everything evil could be connected with terrorist.
D．Because he was a sensitive man.
