请教费费网络课堂里的一道题

米祈

问费费网络课堂里的一道 加强题：not+削弱
答案说是A，我怎么觉得是E对呢？因为使用量增加，不代表percentage增加啊！有可能别的appliances同时增加，precentage反而降低了呢！
请帮帮忙解答一下，谢谢！

Twenty percent of all energy consumed in theUnited States is consumed by home appliances. If appliances that are twice asenergy- efficient as those currently available are produced, this figure willeventually be reduced to about ten percent.The argument above requires which ofthe following assumptions?
(A) Home-appliance usage would not increase along with the energy efficiency ofthe appliances.
(B) It would not be expensive to produce home appliances that areenergyefficient.
(C) Home-appliance manufacturers now have the technology to produce appliancesthat are twice as energy-efficient as those currently available.
(D) The cost of energy to the consumer world rise with increases in the energyefficiency of home appliances.
(E) The percentage of energy consumed by home appliances will increase ifexisting appliances are not replaced by more energy-efficient models.

米祈

没有人回答哦