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8,844.43 6,671 1,025 9,600,000
千位及千位以上数字的表达:以三位数为一个单位,每三位数用“,”隔开
(Let’s go travelling)
Travel around the world
Qomolangma
['t??um?u lɑ:?m?]
珠穆朗玛峰
It’s the highest mountain in the world. It’s 8,844.43 meters high.It’s 26 kilometers long.
The Sahara
[s?'hɑ:r?]?
撒哈拉沙漠
The Sahara is the biggest desert in the world. It’s about 9,600,000 square kilometers(平方公里) in size .
The Nile
[na?l]
尼罗河
The Nile is the longest river in the world. It’s about 6,671 kilometers long.
The Pacific Ocean is the biggest ocean in the world.
Pacific Ocean
The Caspian Sea
['k?spi?n]
里 海
The Caspian Sea is the deepest lake of all the salt lakes(所有的咸水湖中) in the world.It’s 1,025 meters deep .
Match the facts you know.
1a
Qomolangma
about 960,0000 square kilometers in size
the Sahara
1,025 meters deep
the Caspian Sea
6,671 kilometers long