胃溃疡病,说法正确的是
A. 镜下由表面至深层分四层:①渗出层;②坏死层;③肉芽组织层;④瘢痕层
B. 胃溃疡常表现为进食后痛
C. 镜下渗出层:由不等量的急性炎性渗出物如嗜中性粒细胞和纤维素等构成;坏死层由坏死的细胞,组织碎片和纤维蛋白样物质构成
D. 胃溃疡的并发症有:;出血、穿孔、幽门梗阻、癌变
E. 胃溃疡多发生于胃大弯近幽门处,尤胃窦部,直径一般<2cm
To use the machine, first the correct coins, then select the drink you want and press the button.
A. assist
B. insert
C. attach
D. accomplish
Professor Smith translated not only from the French but also, from the Polsih.
A. in retrospect
B. on the other hand
C. in due course
D. on occasion
The WTO(=World Trade Organization ) is intended to trade among its member states.
A. promote
B. exaggerate
C. neglect
D. investigate