问题描述：
英语动词短文填空,
The United Nations 1____ already ______(name) 2006 as the International Year of Deserts（国际沙漠年）.The UN wants people 2______(notice) the beauty and wonders of deserts throughout the world.But the United Nations also wants to pay attention to the dangers the world faces as more and more land becomes desert.Large amounts of land that could once grow crops 3_______( become) desert.Food 4_____no longer ______(grow) in those areas.More land is lost to be desert each year.
Special habitats
Deserts are special environments,Tt's home of many different animals and plants.For thousands of years,deserts have also been home of many civilizations（居民）.
Deserts are fragile environments.The UN is hoping to protect the older deserts as well as ______(stop) new deserts from forming.
The dangers
Experts believe that one-third of the earth’s land surface 6_____( threaten)（威胁） by the loss of farmland.When the land dries up and becomes desert,people cannot grow enough crops to eat.Experts believe this danger 7_____( effect) 1 billion people.Africa has been especially hard by 8______(grow) deserts.Experts believe about two-thirds of Africa’s people are threatened by this loss of farmland.
Causes
People and climate change 9______( cause) much land to turn to desert.People cutting down too many trees has harmed the land.So more cropland is lost each year,more and more people try to live for the remaining good land.This speeds up the harm to the land.
Scientists are using pictures 10______(take) from space to describe the growing deserts.
The United Nations 1____ already ______(name) 2006 as the International Year of Deserts（国际沙漠年）.The UN wants people 2______(notice) the beauty and wonders of deserts throughout the world.But the United Nations also wants to pay attention to the dangers the world faces as more and more land becomes desert.Large amounts of land that could once grow crops 3_______( become) desert.Food 4_____no longer ______(grow) in those areas.More land is lost to be desert each year.
Special habitats
Deserts are special environments,Tt's home of many different animals and plants.For thousands of years,deserts have also been home of many civilizations（居民）.
Deserts are fragile environments.The UN is hoping to protect the older deserts as well as ______(stop) new deserts from forming.
The dangers
Experts believe that one-third of the earth’s land surface 6_____( threaten)（威胁） by the loss of farmland.When the land dries up and becomes desert,people cannot grow enough crops to eat.Experts believe this danger 7_____( effect) 1 billion people.Africa has been especially hard by 8______(grow) deserts.Experts believe about two-thirds of Africa’s people are threatened by this loss of farmland.
Causes
People and climate change 9______( cause) much land to turn to desert.People cutting down too many trees has harmed the land.So more cropland is lost each year,more and more people try to live for the remaining good land.This speeds up the harm to the land.
Scientists are using pictures 10______(take) from space to describe the growing deserts.
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