包装的最早的形式是（）
A.包裹
B.包扎
C.编筐
D.纸张
参考答案：A
溃疡性结肠炎最严重的并发症是
A．肠穿孔
B．癌变
C．肠梗阻
D．中毒性结肠扩张
E．结肠狭窄
Many people in China have never dreamed of ____ achance for them to learn to drive
after their retirement. [ ]
A. being
B. there
C. there to be
D. there being
