设计修正概算在( )阶段编制。
A．初步设计
B．技术设计
C．施工图设计
D．决策
参考答案：B
The monkey is pulling the rope.[ ]
A. on
B. in
C. at
The students have cleaned the classroom,_____?[ ]
A. so they
B. don’t they
C. have they
D. haven’t they
