多发性硬化最常见的眼部疾病是()
A．葡萄膜炎
B．并发性白内障
C．继发性青光眼
D．球后视神经炎
E．视网膜中央静脉阻塞
参考答案：D
It never occurred to me you could succeed in persuading him to change his mind.
A．which
B．what
C．who
D．that
流行性出血热的传染源主要是（）
A.病犬
B.家猪
C.鼠
D.患者
E.病禽
