There are deserts £¨É³Ä®£© all over the world£®Over half of Africa is desert£®The United States has deserts in the southwest part of the country£®In some places £¬deserts are growing£®This is a serious problem£®Deserts destroy farmland and they also ruin £¨»Ù»µ£© land where animals live£®When people can't grow food or find animals to eat£¬they have to leave their homes£®
Deserts spread£¨ÉìÕ¹£© for different reasons£®Sometimes nature causes this problem£®Wind can move sand away from deserts and onto useful land£®When there is no rain for a long time£¬many plants die and the land become a desert£®However £¬human also cause deserts to grow£®This process£¨¹ý³Ì£©is called "desertification"£¬and it happens in many ways£®One way is caused by a lot of air pollution£¬which makes an area hotter£®Hotter weather can reduce the amount of rain£®Also£¬too many people in one area can damage the land£®If they have many animals£¬their animals can also harm the land£®When large animals like cows walk on soil too much£¬they turn it into dust£®The wind easily blows this dust away£®Trees help hold water in the ground£®When people cut down a lot of trees£¬the water runs away and the soil is ruined£®Plants stop growing in these places£®
All of these things can speed up desertification£® To stop deserts from growing£¬people must think of ways to treat the land better£®
1£®What is the main idea of the passage?
A£®Where is the world's deserts are?
B£®How people live in deserts?
C£®The different reasons for growing deserts£®
D£®How cows can stop deserts from growing?
2£®Where are deserts found?
A£®Africa and Latin America£® B£®The United and China£®
C£®On useful land£® D£®Across the whole world
3£®Which is NOT a cause of desert growth?
A£®Little wind£® B£®Using land too much£®
C£®No rain£® D£®Large animals£®
4£®How does humans cause desert growth?
A£®By causing pollution£® B By eating only vegetables£®
C£®By keeping animals£® D£®By moving sand£®
5£®How can humans stop desert growth'?
A£®By using bicycles less£® B£®By raising more cows£®
C£®By cutting down trees£® D£®By planting more trees£®