—Hard to say. Doctors are trying their best.
A:is operated
B:being operated
C:operating
D:having been operated
在消化道的某一部位内抽取内容物进行化验,结果发现其中的脂肪类物质还没有被消化,蛋白质却已被初步消化,那么该部位应是( )
有故事书6本,科技书是故事书的5倍,科技书有( )本。