Methods and materials are reveled relating to novel fibrous materials such as textiles. The post-CMP treating liquid exhibits a polishing rate both of an insulating film and a conductive film of 10 nmmin or less. The metal salt composition comprises at least one magnesium salt. In other embodiments, the hardenable dental articles may be provided in mold cavities located in sacrificial mold bodies that may be torn, stretched, softened, dissolved, etc. A data write circuit sets the other end of the selected bit line and the other end of the current return line to one and the other of a power supply voltage and a ground voltage in accordance with a level of write data via one of first and second data buses and an inverted data bus, respectively.