哮喘持续状态可能有哪些并发症
A．气胸
B．纵隔气肿
C．肺不张
D．酸碱失衡
E．肺结核
参考答案：A,B,C,D
The hotel wasn’t particularly good. But I ____ in many worse hotels.
A. was staying B, stayed C. would stay D. had stayed
视崖实验是用来测量婴儿的( )知觉。
A．形状
B．深度
C．方位
D．时间
E．颜色
