English.+Unit+3.

= **Unit 3: Wonders of the world.** =

Adjectives: long, dry, deep, wide, high.

Examples:

long river dry desert deep ocean wide canyon high mountain

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What is the longest river in the world?

The longest river in the world is the River Nile.

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What is the highest mountain in the world?

Mount Everest is the highest mountain in the world.

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Read:


 * The longest and the widest rivers.**

The River Nile, in Africa, is the longest river in the world. It is about 6700 kilometres long. But the Amazon river, in South America, is the widest river in the world. In some places, this river is between six and ten kilometres wide.


 * The biggest and the driest desserts.**

The Sahara Desert, in Africa, is the biggest desert in the world. It is about eighteen times bigger than Spain! But the Atacama Desert, in South America, is the driest desert in the world.


 * The highest mountains above and below sea level.**

Mount Everest, in Asia, is the highest mountain in the world above sea level. It is about 8850 metres high. But Mauna Kea in the Pacific Ocean is higher than Mount Everest. It is about 11000 metres high! So, the highest mountain in the world is below sea level. The top of this mountain forms the island of Hawaii.