2. 外语
  3. Which of the following statements best describes the organization of the passage? The author mentions all of the following as r

Which of the following statements best describes the organization of the passage? The author mentions all of the following as r

admin2009-09-12  105
问题 Which of the following statements best describes the organization of the passage?
The author mentions all of the following as reasons why plankton could be considered a human food source EXCEPT that it is ______.
选项 A、high in food value
B、in abundant supply in the oceans
C、an appropriate food for other animals
D、free of chemicals and pollutants
答案D
解析 细节题。参见第一段第三句、最后一句。全文对plankton的化学成分与是否含有污染物只字未提。
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大学英语四级

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