1,2,3,5,8,13,( )
A.19
B.20
C.21
D.22
参考答案:C
I learned _____ the city for a long time. [ ]
A. she has been to
B. she has gone to
C. she had been in
D. she had gone to
某桥梁工程,主梁浇筑完成后,在拆除满堂支架的过程中,发生支架局部倒塌伤人事故。
[问题]事故发生后应如何进行处理?