路由器RG的S0的IP地址是______，路由器RE的S0的IP地址是______。
参考答案：172.19.63.193
关节脱位的体征是（）
A.弹性固定
B.关节疼痛
C.畸形
D.局部压痛
E.关节盂空虚
It really seemed ages ______ the police came on the scene and cleared away the damaged cars. [ ]
A. before
B. after
C. when
D. as
