脑膜炎时常见的呼吸变化是（）
A.呼吸浅慢
B.呼吸深快
C.抑制呼吸
D.潮式呼吸
E.呼吸过缓
参考答案：D
_____ she had not spelt the word wrong, Cathy would have got a full mark. [ ]
A. If
B. Since
C. Though
D. When
( )是持续燃烧的先兆。
A．阴燃
B．自燃
C．闪燃
D．爆燃
