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Why is the black walnut tree so valuable7
Why is the black walnut tree so valuable7
admin
2011-03-01
24
问题
Why is the black walnut tree so valuable7
The black walnut tree is the most valuable tree in America, because of both its beauty and its hardwood. It is said that a single tree once sold for $11000. Hardwood hunters search the woods for trees that will bring such prices.
When the Dutch first sailed up the Hudson River 300 years ago, they discovered black walnut trees so large that the first branch was as much as 70 feet above the ground. In colonial times the black walnut became one of America’s first exports, because it was highly prized by cabinetmakers. During World War I almost all natural woods of the black walnut were eliminated. Trees were harvested for gun stocks, and even the nutshells were collected to use as filtering material in gas masks.
Today, growing black walnut trees is profitable because of the demand for it. However, not every black walnut tree is necessarily valuable. It must be inspected to see if it meets certain standards. Furthermore, the roots of the black walnut tree produce a poisonous substance that will cause harm to tomatoes, potatoes, blackberries and apples.
选项
A、The black walnut tree is valued for its nuts.
B、The black walnut tree is famous for its size.
C、Every walnut tree is highly valuable and profitable.
D、A single black walnut tree was once sold for $11,000.
答案
D
解析
本题的关键词句为beauty,hardwood,a single tree once sold $11,000,这是对胡桃树价值的最好的判断,概括也最全面,答案选[D]。
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公共英语三级笔试题库公共英语(PETS)分类
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公共英语(PETS)
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