寻常型天疱疮的免疫复合物沉积在()
A.棘细胞间
B.基底膜带
C.细胞核
D.血管内壁
参考答案:A
—What's on the table?
—________ some bread on it. [ ]
A. There is
B. There are
C. We are
D. They are
提高职工素质是缩短基本时间,提高劳动生产率的重要保证。