肾上腺素需要检查的杂质为
A．间氨基酚B．水杨酸C．对氨基酚D．酮体E．对氨基苯甲酸
参考答案：D
青霉素过敏性休克抢救的首选药物是（）
A.去氧肾上腺素
B.去甲肾上腺素
C.肾上腺素
D.异丙肾上腺素
E.肾上腺素+去甲肾上腺素
—_____ will your parents take you to Shanghai?
— In about two months, after I finish the final exams.[ ]
A. How long
B. How soon
C. How often
D. How many times
