现代城市化发展的最基本动力是( )。
A．科技化 B．信息化C．机械化 D．工业化
参考答案：D
This is one of the best films _______.
A．that have been shown this year
B．that have shown
C．that has been shown this year
D．that you talked
防爆型F扳手采用优质（）材料制作。
A.钢
B.铁
C.铜
D.铝
