题目

   To help the environment, many Americans have made the change from paper and plastic bags to reusable grocery bags. But a report by a Florida newspaper says that reusable grocery bags sold by some supermarkets contain high levels of lead(铅). Lead is a metal that can be harmful to humans, especially young children. Now, Senator Charles Schumer is asking the US government to investigate(调查) the use of lead in reusable shopping bags. “When our families go to the grocery store looking for safe and healthy foods to feed their kids, the last thing they should have to worry about 下列是有关鼻腔作用的叙述，错误的是（ ）A．鼻腔对吸入的气体有清洁作用B．鼻腔对吸入的空气有温暖作用C．鼻腔对吸入的气体中的细菌有杀灭作用D．鼻腔对吸入的气体有湿润作用