There are some places in the world where great cities once stood. There were trees, garde

There are some places in the world where great cities once stood. There were trees, gardens and grass. But now these cities have gone and the places are like deserts. Scientists began to study this land to find out what happened. Many of them believed the land died when the trees were cut down.
Trees help other plants grow and help hold the soil in place. They keep the soil from blowing away. The leaves of trees on the ground keep rainwater from running off. Trees near farms protect growing plants from strong winds.
Once there were hundreds of farms in the southwestern United States. Then the farms turned into fields of dry dust. Trees might have saved these farms. But few trees grow in the dry southwest now.
Now we try to save trees. In many places, when a tree is cut down , a new tree is planted in its place . We do not want the land to die.
【小题1】Places where great cities once stood are now like .A．farmsB．gardensC．desertsD．fields【小题2】What can trees do according to the passage ?A．Trees can keep other plants green B．Trees can help other plants grow .C．Trees can help the land grow .D．Trees can keep other plants in place .【小题3】Which is true ?A．Trees let the rainwater run off .B．All the farms in the United States have turned into deserts .C．There aren’t any trees in the dry southwest now .D．Land will die if there are no trees .【小题4】The main idea of this passage is .A．that farms are better than citiesB．how farms turned into deserts C．that trees are important to the landD．how people save trees【小题5】From the passage we know that .A．trees can blow soil awayB．man should protect the land C．trees grow only in desertsD．trees die easilyC

(答案→)C 解析： 【小题1】C细节理解题。结合But now these cities have gone and the places are like deserts.可知答案。【小题2】B细节理解题。结合Trees help other plants grow and help hold the soil in place可知答案。【小题3】D细节理解题。结合Many of them believed the land died when the trees were cut down可知答案。【小题4】C主旨大意题。文章主要说明了树木对土地的重要性。【小题5】B推理判断题。结合We do not want the land to die可知答案。

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