斯堪的纳维亚国家的现代设计以功能为核心，注意现代新材料、新技术与传统木材、传统手工艺的结合。( )
参考答案：对
Not until he left his home ______ to know how important the family was for him.
A．did he begin
B．had he begun
C．he began
D．he had begun
吊装防喷器移动时，如何防止对修理工造成碰撞？
