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What is the most important service of trees to man according to the passage? Why does land become desert after all trees are cu
What is the most important service of trees to man according to the passage? Why does land become desert after all trees are cu
admin
2009-06-28
24
问题
What is the most important service of trees to man according to the passage?
Why does land become desert after all trees are cut down?
选项
A、Because nothing remains on land except floods.
B、Because there are no longer trees to keep the rain and protect the top-soil.
C、Because too much rain sinks in and washes away the top-soil.
D、Because roots of the trees break up the soil.
答案
B
解析
细节题。由第三段可知:没有树的地方,雨水会造成洪灾并把丰富的土壤冲刷走,留下了不值钱的沙土。
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本试题收录于:
大学英语三级A级题库大学英语三级分类
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大学英语三级A级
大学英语三级
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