在起重作业中广泛用于吊索、构件或吊环之间的连接的栓连工具是()
A.链条
B.卡环
C.绳夹
D.钢丝绳
参考答案:B
---I came all the way to inform you of the time and place of the meeting.
---You could have _____ yourself the trouble.
A.shared
B.spared
C.cost
D.removed
请做一个采用“例规教学模式”来组织的小学数学运算规则的教学设计。