胃液中内因子的作用为( )。
A. 激活胃蛋白酶原
B. 参与胃粘膜屏障作用
C. 促进维生素B12的吸收
D. 促进胃泌素的释放
E. 抑制胃蛋白酶的激活
下列哪项不属于胆汁作用的是
A. 分解脂肪
B. 乳化脂肪
C. 促进脂肪吸收
D. 刺激胆汁分泌
E. 中和进入十二指肠内的胃酸
与肠黏膜细胞吸收葡萄糖关系密切的转运过程是( )。
A. HCO3-的被动吸收
B. Na+的主动吸收
C. K+的主动吸收
D. Cl-的被动吸收
E. Ca2+的主动吸收
Your happiness index is bound to _____________(1. A、slump;B、spiral;C、drastic;D、eviction;E、verge) downwards once your parasite life expires.A __________(2. A、slump;B、spiral;C、drastic;D、eviction;E、verge) in your confidence may result from your premature optimism about life.____________ (3. A、slump;B、spiral;C、drastic;D、eviction;E、verge)as the measures were, little progress was made in betterment of social order.His indulgence in fun seeking has brought him to the _________(4. A、slump;B、spiral;C、drastic;D、eviction;E、verge) of indifference to life.In much of the country, abuse of land resulted in a forced ___________ (5. A、slump;B、spiral;C、drastic;D、eviction;E、verge)of farmers.