移植排斥反应损伤机制中能激活CTL、NK杀伤移植物,使B细胞产生抗体的细胞因子是()
A.IL-1
B.IL-8
C.IL-2
D.IL-4
E.IL-5
参考答案:C
What does the speaker mean a. Mary sings the best in her grade. b. The speaker has no idea whether Mary sings well. c. Mary’s singing skills are inferior to a lot of her classmates. d. Mary’s singing skills rank the second in her class.
“动脉瘤样骨囊肿”正确的演变顺序为()
A.稳定期、溶骨期、膨胀期、愈合期
B.膨胀期、稳定期、溶骨期、愈合期
C.溶骨期、膨胀期、稳定期、愈合期
D.稳定期、膨胀期、溶骨期、愈合期
E.膨胀期、溶骨期、稳定期、愈合期