Nature: Landscapes 自然：风景地貌
 
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1 : A very deep valley with steep sides is called a ________.
mountain
canyon
field
wilderness
 A landscape
 
2 : A lot of undiscovered animals live in the world's ________.
rainforests
headlands
deserts
desserts
 A green landscape
 
3 : Watch out for the edge of the ________. It is very steep.
hedgerow
forest
cliff
meadow
 A landscape by the sea
 
4 : ________ are important to the world's water resources.
caves
glaciers
dales
prairies
 An icy landscape
 
5 : A ________ is another name for a large flat area of land, which is covered in grass with few trees and is usually found in hot countries.
waterfront
coast
hilltop
savannah
A lion in a landscape
 
6 : A ________ is flat land that is usually found high above sea level.
plateau
woodland
gorge
reef
 A landscape