题目选项分析

In contrast to environmentalists' proposals to limit emissions of certain pollutants, the administration proposed a call for mandatory restrictions, including those for only three such pollutants from power plants-mercury, sulfur dioxide, and nitrogen oxides-and the plan would delay such cuts until 2010 or later.

In contrast to environmentalists' proposals to limit emissions of certain pollutants, the administration's proposal would call for mandatory restrictions on only three such pollutants from power plants-mercury, sulfur dioxide, and nitrogen oxides-and the plan would delay such cuts until 2010 or later.