横向
1
Physical features of land
3
Deep narrow valley with steep sides
5
City that is seat of government
6
Largest river in South America
7
Goods sold to another country
10
Half of the Earth
纵向
2
Land surrounded by water on three sides
3
One of seven major landmasses
4
Dry land with little rainfall
8
Wearing away of land by water or wind
9
Goods brought in from another country
11
Ridge of rock or coral near the surface
12
Body of water surrounded by land