prep语法注释33题的比较对象问题

banglixing

More than 300 rivers drain into Siberia's Lake Baikal, which holds 20 percent of the world's fresh
water, more than all the North American Great Lakes combined.

(A) More than 300 rivers drain into Siberia's Lake Baikal, which holds 20 percent of the world's
fresh water, more than all the North American Great Lakes combined.
(B) With 20 percent of the world's fresh water, that is more than all the North American Great
Lakes combined, Siberia's Lake Baikal has more than 300 rivers that drain into it.
(C) Siberia's Lake Baikal, with more than 300 rivers draining into it, it holds more of the world's
fresh water than all that of the North American Great Lakes combined, 20 percent.
(D) While more than 300 rivers drain into it, Siberia's Lake Baikal holds 20 percent of the world's
fresh water, which is more than all the North American Great Lakes combined.
(E) More than all the North American Great Lakes combined, Siberia's Lake Baikal, with more
than 300 rivers draining into it, holds 20 percent of the world's fresh water.  

B、C、D我都知道是错的，但是就A跟D不了解，答案说E是湖跟湖的比较，所以错，而A是两湖水量的比较
但我觉得两个选项都是湖跟湖的比较，请教大家，这两个选项从哪可以看出区别呢？
谢谢了

rosswye

话说我一上来也是选E的，但是我明白那个比较对象问题了。。。

把more than all the North American Great Lakes combined还原，
就变成 *** is more than all the......就是说***比较多
在这里只能是水量比较多，不能是湖比较多，因为一共就一条湖，不可能比的。。。 E就是错在比了不可能比的东西，一条湖比***多，没逻辑。。。

open discussion

onedayling

好像有点小明白……还要继续想一想
怎么说，都谢谢楼上啦

taohuaxian

还是不太清楚，有大牛能清楚地写一下，文中到底是什么跟什么在比较吗？

做题的时候就感觉A选项中可能存在比较对象不对等，结果把A排除了，囧。。。