一道费费逻辑,请指教

nishirenren

本题标准答案是C，原题中答案C和D对调，因此正确答案为：

C. There is a thriving market for used older united states automobiles that are exported to regions that have no emission-control regulations.
因为这些汽车被卖到别的国家，因此“such older United States automobiles contribute to the global atmosphere will be gradually reduced over the next decade”是错的