分泌抗体（）
A.NK细胞
B.B细胞
C.肥大细胞
D.细胞毒性T淋巴细胞
E.浆细胞
参考答案：E
—Come and join US. Jimmy!
—I'm sorry, but I'm really busy now. If I ____ time, I would certainly go. [ ]
A. will have
B. have had
C. had
D. have
最严重的肾损伤类型是（）
A.肾挫伤
B.肾全层裂伤
C.肾蒂断裂
D.肾部分损伤
E.肾皮质裂伤
