unit3,课件
日期：2010-09-25 09:36
(long)
The Nile is longer than the Mississippi
Mississippi
Nile
The Sahara Desert
The Gobi Desert
The Sahara Desert is larger than the Gobi Desert
96 million square Km
12 million square Km
(large)
28，251 feet
K2
Mount Qomolangma
(high)
Mount Q，
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