Whoever is new in the community will soon       to the new environment, as everybody here is friendly and helpful.

A．apply

B．appeal

C．attach

D．adapt

下列不是Ⅱ型超敏反应特点的是

A．抗原或抗原抗体复合物存在于细胞膜上
B．介导的抗体是IgG和IgM
C．有补体、吞噬细胞和NK细胞参与
D．后果是靶细胞被破坏
E．有大量效应性T细胞增殖