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There is little rain in desert. Because deserts are so dry, they have no “quilt” to help stop the soil from going away. As a result, they may get very hot during the day with the sun shining, but don’t hold the heat overnight. Many deserts can quickly get cold once the sun goes down. Some deserts can reach temperatures of over 100 degrees F during the day and then drop below freezing (32 degrees F) during the night.

The largest hot and dry desert in the world is the Sahara Desert in Northern Africa. The Sahara is a sandy desert with great sand hills. It covers over 3 million square miles of Africa. Other large deserts include the Arabian Desert in the Middle East, the Gobi Desert in Northern China and Mongolia, and Kalahari Desert in Africa.

Animals that live in the desert are also used to needing little water. Many get all the water they need from the food they eat. Other animals keep water that they can use later. The camel stores up fat in its hump while other animals keep something they need in their tails.

Only certain types of plants can live in the terrible environment of the desert. You won’t see a lot of tall trees in the desert. Most plants have a way to keep water in their leaves, or trunks so they can live a long time without water.

Now deserts cover around 20% of the world’s land, but they are growing. This is called desertification and is caused by different reasons including human activities. The Sahara Desert is growing larger and larger each year. What should we do with it ?

1.How is the weather during the night in the desert?

A. Hot.                 B. Cold.               C. Cool.

2.Where does the camel store up fat?

A. In its hump.       B. In its stomach.       C. In its tail

3.Why won't we see a lot of tall trees in the desert?

A. Because of few people there.

B. Because of the sun shining.

C. Because of the terrible environment

4.How much of the land do deserts cover in the world?

A. One fifth.     B. Less than 10%.     C. Two fifths

5.Is the Sahara Desert growing or not?

A. Nobody knows it.

B. It's growing.

C. It's not growing.

九年级英语阅读理解中等难度题

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