Sub子程序和Function函数的区别在于：（）
参考答案：sub无返回值，function有返回值
It rained heavily. ______ I had an umbrella with me. [ ]
A. Again
B. Luckily
C. Next
D. Finally
治疗热闭神昏，常用的药物是______。
A．郁金 B．石膏C．冰片 D．黄连
