(D) while the duplication of facilities should be avoided 用while 不对 , 因为should be .. 不是即成的事实。
。。。if only because,,, 有强烈的因果关系。
有人说是虚拟语气,Building large new hospitals in the bistate area would constitute a wasteful use of resources, if only because the duplication of facilities should be avoided 、、、不敢确定