题目内容

The author would most likely agree with which of the following assertions about the environmental impact of hydroelectric power plants?
• AIt cannot be inferred from calculations of the environmental impact of a few hydroelectric plants
• BIt is not primarily determined by the effects of dam building on vegetation
• CIt cannot be calculated with sufficient accuracy to justify the requirement of environmental impact studies prior to plant construction
• DIt could be significantly improved if the amounts of steel and cement used for dam building could be decreased
• EIt is too substantial, when all factors are considered, to justify the building of new dams

B显示答案

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