Great changes         in my   hometown last year.                   [ ]

A. were taken place                  

B. was taken place                  

C. took place                  

D. have taken place

石膏绷带固定不正确的是

A．观察肢端血循环
B．躯干石膏若影响呼吸应及时处理
C．协助病人更换卧位
D．病人诉石膏管内疼痛给予止痛药
E．抬高患肢