气管哮喘发作期治疗的常用药物有 （）
A.拟肾上腺素类
B.茶碱类
C.肾上腺素皮质激素类
D.抗胆碱能类
E.色甘酸二钠
参考答案：A, B, C, D
The mother insisted that her child ____still alive and that she____ to the hospital at once.
A. was; was sent B. was; be sent C; should be; should be sent D. be; be sent
蝗虫的变态属于（）
A.半变态
B.渐变态
C.过渐变态
D.全变态
