合成SIgA分泌片的细胞是（ ）
A．巨噬细胞
B．NK细胞
C．肥大细胞
D．浆细胞
E．黏膜上皮细胞
参考答案：E
—This is your order, a hamburger and an apple pie .
—I’ll have it here.
A．Anything ease
B．Is that OK
C．Something to drink
D．For here or to go
静电分子
