丝绳绳头的制作是一种火焰作业，工作现场附近应设置有（）
参考答案：灭火装置
The little town has now grown into a modern big city, and is ______ what it used to be.
A．twice the size than
B．twice times the size as
C．twice the size as
D．twice the size of
我国致力于在（）成为世界科技强国。
A.22世纪初
B.22世纪中叶
C.21世纪中叶
D.21世纪中后叶
