关节脱位的固定时间一般不超过（）
A.2周
B.2～3周
C.3周
D.3～4周
E.4周
参考答案：B
---You were brave enough to raise objections at the meeting.
---Well, now I regret ____ that.
A. to do b. to be doing C. to have done D. having done
下述基因与肺癌关系密切，除去（）
A.p16
B.p53
C.Gmyc
D.K-ras
E.HLA
