题目选项分析

Discussion of greenhouse effects has usually focused on whether the earth would warm and by how much, but climatologists have indicated all along that the most obvious effects, and those that would have the largest impact on people, would be extremes of temperature, precipitation, and storminess.

Discussion of greenhouse effects has usually focused on whether the earth would warm and by how much, but climatologists have indicated all along that the effects that are the most obvious ones, extremes of temperature, precipitation, and storminess, would be those impacting the most on people.