文档介绍：Unit 7
What’s the highest mountain in the world?
Section A 1a-2d
The second longest
river in the world
-Do you know its
name?
-It is Amazon.
-Do you know how
long it is?
-It’s about 6,500
kilometers long.
The world’s highest
mountain
Do you know how
high it is?
It is 8,844 meters
high.
Qomolangma
Do you know how deep Sahara is?
Yes, it is about 9,600,000 square kilometers in size.
Sahara
The world’s deepest dessert
size n.
1. 大小[C][U]
What’s the size of the park?
2. 尺码,号[C]
This shirt is your size.
The world’s deepest salt lake
The Caspian Sea
Do you know that how deep it is?
Yes, it is 1,025 meters deep.
The longest river in Asia.
The Yangtze River
Do you know how long it is?
Yes, it is 6,300 kilometers long.
It’s 8,844 meters high. 它有