【題組】24
(A)For instance, the memory and graphics requirements of Microsoft’s recent Vista operating system spell doom for aging machines that were still able to squeak by a year ago.
(B)In theory, recycling gold from old computer motherboards is far more efficient and less environmentally destructive than ripping it from the earth.
(C)If all sources of electronic waste are tallied, it could total 50 million tons a year worldwide, according to the UN Environment Programme.
(D)As viewers prepare for the switch, about 25 million TVs are taken out of service yearly.