题目内容：

    The Sahara Desert is the largest desert on the earth. It is about 8,600,000 square kilometers in size.

The desert’s golden sand looks very beautiful.

More than 2,000,000 people live in the Sahara. Some of them move around from place to place with their camels. Others live in towns and cities. The desert is not always hot. There are many mountains in the Sahara, and some of them have snow in winter. In some places, people grow fruit. There are also different animals there, such as snakes, foxes and birds.

Thousands of years ago, the Sahara was not a desert at all. There were many plants and rivers. As the weather changed, it became hot and dry.

请根据短文内容，判断句子正误，正确的选T，错误的选F.

1.The Sahara Desert is the largest desert on the earth.

2.About 20,000,000 people live in the Sahara.

3.The desert is always hot.

4.There are also different animals in the Sahara, such as snakes, foxes and birds.

5.Millions of years ago, the Sahara was not a desert at all.