领导艺术是对下列哪项的系统总结、理性升华和创造性应用______

A．领导方法
B．领导科学
C．领导经验
D．领导技巧

Glass is obviously a wiser choice for the plate as it can easily be recycled and does not take hundreds of years to _____ like plastic.

A．break off

B．break out

C．break down

D．break into