A:江阔水深,被誉为“黄金水道”
B:峡谷众多,水能资源异常丰富
C:河道弯曲,容易引发洪涝灾害
D:河床抬高,有“地上河”景观
下列文学形式与宋朝有关的是( )
Some students spend ________ time on the Internet. They forget to study, eat and sleep. They can't even communicate with people in real life.