刺激小肠黏膜释放促胰液素作用最强的物质是()
A.盐酸
B.蛋白质分解产物
C.脂酸钠
D.脂肪
E.糖类
参考答案:A
If the building project _________ by the end of this month is de- layed, construction company will be freed.
A.to be completed
B.is completed
C.being completed
D.completed
xm=2,xn=3,则xm+n=[ ]
A.5
B.6
C.23
D.32