十二指肠溃疡病的结局多是（）（），愈合，出血等。
参考答案：幽门狭窄；穿孔
What a table! I’ ve never seen such a thing before. It is ______ it is long.
A．half not as wide as
B．wide not as half as
C．not half as wide as
D．as wide as not half
增加衣层的牢固，使片面坚实、平滑，需要（）
A.隔离层
B.粉衣层
C.糖衣层
D.有色糖衣层
E.打光
