A:日本海岸线曲折,多优良港湾
B:岛国多港湾,海上运输方便
C:丰富的人力资源,较高的科学文化水平
D:矿产资源贫乏
我国素有“黄金水道”之称的河流是
Many teenagers often go to school without ____ (have) breakfast. It is not good for them.