这里ABC的duplicated facilities的用法全部都是错误的。因为既然已经用了完成时态的duplicated，还怎麽避免呢？
这里E的含义是这样：如果仅仅因为设施的重复应该避免的话，那么在这个地方建医院是浪费资源。
这里lz可以比较下duplicated facilities（已重复的设施）和duplicatiion of facilities（设施的重复）之间的细微区别
-- by 会员 weirui5621 (2010/4/24 23:18:30)
if only because是一个习惯用语 表示for no better reason than that
I clean the kitchen floor
because it's dirty. = I do the cleaning for this reason: The floor is dirty at that time.
I clean the kitchen floor
onlybecause it's dirty. = I do the cleaning for this reason, and
only this reason; I don't do it for any other reason.
I clean the kitchen floor
ifonlybecause I've gotten into the habit. = I do the cleaning for no really good reason. I do not do the cleaning
because the floor is necessarily dirty, for example. Maybe
IF I do the cleaning, the real reason is
ONLY/simply/just
BECAUSE I'm in the habit of doing so, whether the floor is dirty or not.
-- by 会员 overthere33 (2009/8/23 16:01:00)
1.逻辑上分析，这里要avoid的是“重复建造”，而不是“设施”，C中facilities should be avoided逻辑上不对
E中duplication should be avoided，逻辑上才正确。
2.in that和because的区别，参见http://forum.chasedream.com/dispbbs.asp?BoardID=23&replyID=95666&id=14357&skin=0
3.C中的while不能用来解释原因
-- by 会员 FiEdo (2007/8/21 14:01:00)
挺难的一道题目！
GMAC现在的题目越来越喜欢拿略为有点问题的，或者看上去很不舒服的选项作为正确答案了。
依然是以句意为根本：
在哪里哪里盖大医院很浪费，仅仅从应该避免重复建设这一点上看（这么做）就是浪费。
B错是因为on the ground of 后面跟的是标准
可以参照下面两个例子看看 on the ground of race是个既常用又标准的用法。
Discrimination between human beings on the ground of race, colour or ethnic origin is an offence to human dignity The survey clearly demonstrates that discrimination
on the ground of sexual orientation and gender identity undermines young LGBT people’s capacity to be socially included and to become active citizens.
所以B如果改为 on the ground of efficiency of facilities应该就没问题了
E真的不容易选出来。我也把它排除掉了，因为if because两个站在一起造成句子结构不完整。但是看了别的坛子的讨论，老美们似乎不觉得这是个大问题，if only仅仅修饰because，与单独的if引导从句不同。
-- by 会员 GmatThunder (2008/7/10 9:58:00)
