We put some ___________ on the table.[ ]
A. dish
B. dishes
C. dishs
答案:B
The manager promised to keep us______ of how our business was going on.
A.being informed
B.informed
C.informing
D.to be informed
由多位研究者按同一试验方案在不同地点和单位同时进行的临床试验址
A.试验方案B.记录与报告C.试验用药品D.质量保证E.多中心试验