题文
Deserts(沙漠)do not stay the same size (形状).Sometimes they grow bigger. Sometimes they get smaller. The world’s biggest desert, Sahara, is in Africa. Right now, the Sahara desert is growing fast.
Why is the Sahara growing ? In some places , People farm too much. In other places ,animals eat all the grass. or people cut down the trees. This makes the soil(土壤) weak. Weak soil lets the desert grow.
Why is it a problem? people can not grow food in the desert. people can not build houses, hospitals , or schools in the desert . so people must leave their homes .They must live somewhere else.
What can people do ? They can plant trees. They can also farm less. These things make soil stronger. maybe the Sahara will stop growing . It’s a big problem. Many people must work together to solve (解决) it?
小题1:What is the main idea ?(中心思想)A．The Sahara Desert is in Africa .B．Farming too much makes the soil weak.C．Big problem are caused (引起) by the growing Sahara desert.D．Planting trees will help the world.小题2:The Sahara is growing .Which of these things is not a reason(理由)？A．Building homesB．Farming too muchC．Animals eating the grassD．Cutting down trees小题3:What do we know about deserts ?A．Their size never changesB．They are caused by peopleC．They can make trouble for peopleD．They are all in Africa.小题4:Planting trees can A．make the soil weakerB．help people farm lessC．be good for the soilD．make the Sahara grow.小题5:Stopping growing the desert A．is easyB．takes a lot of peopleC．is not a big problemD．is not important
题型：未知 难度：其他题型
答案
小题1:D
小题2:A
小题3:C
小题4:C
小题5:B
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解析
小题1:根据文章内容大意可知答案为D
小题2:根据文章内容Why is the Sahara growing ? In some places, People farm too much. In other places, animals eat all the grass. or people cut down the trees. This makes the soil(土壤) weak. Weak soil lets the desert grow.可知答案为A
小题3:根据文章内容. so people must leave their homes .They must live somewhere else.可知答案为C
小题4:根据文章内容What can people do ? They can plant trees. They can also farm less. These things make soil stronger.可知答案为C
小题5:根据文章内容It’s a big problem. Many people must work together to solve (解决) it?可知答案为B
考点
据考高分专家说，试题“Deserts(沙漠)do not st.....”主要考查你对 [科教类阅读 ]考点的理解。
科教类阅读
科普类的阅读：
科普类的阅读理解包含介绍科学知识、社会知识的短文。阅读这类短文时，要以事实为中心进行思考，抓住事物的特征、用途、相互关系等。
如果是介绍社会现象的文章，要掌握所谈现象的内涵。
答题技巧：
1. 加强整体意识，把握文章的主要内容。在阅读的时候可给段落标上序号，并给重要的句子和
关键词做上记号，尤其是各段中心句，为答题提供更快捷更多的信息源。
2. 审清题干，发觉和把握试题中有效的提示性信息，确认命题的角度、阅读范围和答题方式。
3. 定位阅读，强化对应意识。同时要注意原文利用和自我加工相结合。
