本题目来源于试卷: SL Topic C3.2 Defence against disease，类别为 IB生物学
[单选题]
2. Which of the follow s2igw)y yjs;v*3dmu;k.t,q 0eq /hctni*n . 0umx4x*q+ci noing processes occur in B-cells on infection of a human by a pathog* xqiinxn0+. c4n u*moen?
I They are activated by contact with a helper T-cell.
II They are activated by contact with an antigen.
III They can differentiate to produce antibodies.
IV They divide rapidly by mitosis.
A. I III and IV only
B. All of the above
C. I, II and III only
D. I and II only
参考答案: B
本题详细解析:
暂无
| 
