单选题 Nuclear power plants are some of the largest producers of ______ wastes, with each plant producing barrels of radioactive material that must be stored in special protective containers.
A. biodegradable B. hazardous
C. reasonable D. durable

【正确答案】 B
【答案解析】[解析] B选项:hazardous的意思为“危险的,危害的”,如:These conditions are very hazardous for shipping.(这些情况对航海非常不利。)句意:核电站是某些有害废物的最大制造者。每一个核电站产生成桶的放射性物质,必须存放在专门的防护容器里。故选B。
其他三项意思分别是:biodegradable能进行生物降解的;reasonable合理的,适度的;durable持久的,耐用的。