A:(﹣2,1
B:﹣1,1
C:4,7)
D:(﹣2,1∪4,7)
两个铅柱的端面削平,将削平的端面用力压紧.在其下面悬挂一个重物也不能将它们分开,这说明 ____
--- Lots of trees and flowers ________ in Zhangzhou every year.
--- You're right. That makes our city more and more beautiful.