施药后的空药瓶、空药袋应集中收集，妥善处理，不得（）。
参考答案：随意丢弃
We didn't plan our art exhibition like that but it _____ very well.[ ]
A. worked out
B. tried out
C. went on
D. carried on
该患者首选的治疗方法是：
A．体外放疗B．腔内放疗C．烷化剂化疗D．合成孕激素E．免疫治疗
