在1998年长江洪涝灾害中发挥重要作用的监测网有（ ）
①气象监测网 ②地震监测网 ③水文监测网 ④海洋监测网
A. It's very hot.
B. Three little pigs are fat.
C.I have a good idea.
D. Open the door.
E. We are good brothers.
