B. Lithium 6 is as toxic as mercury and does harm to environment. C. The using of lithium has been forbidden in the U.S.

杭州武林，自古即为隐贵之地。陶渊明曾说，唯身处“近”方能体味“远”，且“近”亦可映衬“远意”。杭州凤咏朝阳座隐于城市喧器之中，将此地化作一座公共的艺术空间。正如诗句所言:“久在樊笼里，复得返自然”。由此，得以由心灵深处发轫，构筑全维度而纷呈多样的场景 ...