下列白介素（IL）家族中属于抗炎因子的是（）
A.IL-6
B.IL-4
C.IL-10
D.IL-13
E.IL-8
参考答案：B, C, D
补全对话
A: __1_
B: I'm not feeling well.
A: _ 2 _
B: No, I don't.
A: Do you have a ferver?
B: Yes, I think so.
A: 3
B: This morning.
A: That's too bad. 4 . I hope you will feel better tomorrow.
B: 5
A: When did it start?
B: Thanks.
C: Do you have a sore throat?
D: What's the matter?
E: You should take some medicine
维护、保养对磨损的作用有（）。
A.防止和减少磨损
B.缩短机器使用寿命
C.降低成本
D.消除磨损引起的故障和隐患
