Many people in this country eat        as they actually need every day.

A．twice as much meat

B．twice meat as much

C．as twice much meat

D．meat as much twice

声音是一种物理信号，计算机要对它进行处理，必须将它表示成二进制数字的编码形式。图1是将模拟声音信号进行数字化的过程，其中步骤①和②对应的操作分别是：

A． 量化、取样

B． 取样、压缩

C． 量化、压缩

D． 取样、量化