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题目选项分析

The Earth`s rivers constantly carry dissolved salts into its oceans. Clearly, therefore, by taking the resulting increase in salt levels in the oceans over the past hundred years and then determining how many centuries of such increases it would have taken the oceans to reach current salt levels from a hypothetical initial salt-free state, the maximum age of the Earth`s oceans can be accurately estimated.

Which of the following is an assumption on which the argument depends?

【选项】None of the salts carried into the Earth`s oceans by rivers are used up by biological activity in the oceans

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:GWD-102
  • 题目来源2:PREP2012-73
正确率:55%