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.
答案：E
1、原文正确。全局划线必考逻辑。主干就是rivers drain into Siberia's Lake，后面插入语优先向前修饰贝加尔湖，后面第二个more than是一个同位语就近修饰water，所以原文都是在表达水量的问题，没有歧义。语义即为：超过300多个河流流入到占世界20%的比北美大湖区加起来都还要多的淡水的贝加尔湖。
