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33. (26233-!-item-!-188;#058002541) More than 300 rivers drain into Siberias Lake Baikal, which holds 20 percent of the worlds fresh water, more than all the North American Great Lakes combined. (A) More than 300 rivers drain into Siberias Lake Baikal, which holds 20 percent of the worlds fresh water, more than all the North American Great Lakes combined. (B) With 20 percent of the worlds fresh water, that is more than all the North American Great Lakes combined, Siberias Lake Baikal has more than 300 rivers that drain into it. (C) Siberias Lake Baikal, with more than 300 rivers draining into it, it holds more of the worlds fresh water than all that of the North American Great Lakes combined, 20 percent. (D) While more than 300 rivers drain into it, Siberias Lake Baikal holds 20 percent of the worlds fresh water, which is more than all the North American Great Lakes combined. (E) More than all the North American Great Lakes combined, Siberias Lake Baikal, with more than 300 rivers draining into it, holds 20 percent of the worlds fresh water. 考点: 比较（Comparison） 简洁有效（Rhetorical Construction） 1) 限定性从句和非限定性从句: 限定性定语从句对先行词起限制、确定作用,与先行词有着不可分 割的联系,它的前面通常没有逗号;非限定性定语从句与它的先行词之间只有比较松散的关系,通常 用逗号将它与主句隔开 2) 比较的双方必须概念对等  (A) 正确, 非限定定语从句which holds…就近修饰Lake Baikal; more than all the…作为20 percent of the world’s fresh water的同位语,意思清晰,结构简单 (B) that引导限定性定语从句前面不用逗号隔开, 而此处去掉that从句并不影响原句的主要意思,因 此应该用which引导的非限定性定语从句表明两者之间松散的逻辑关系, 但即使改为which引导的 非限定性定语从句,which也只能修饰fresh water仍然意思不对; has more than 300 rivers that drain into it表达笨拙,不如A的结构简单 (C) 去掉插入语with more than 300…原句变成Siberia’s Lake Baikal it holds 20 percent… it多余. 后半句结构混乱. (D) while作为连词表示当…的时候或者表示转折,而原句并没有这种逻辑关系; which引导的非限 定性定语从句就近修饰fresh water, 而从逻辑上应该修饰20 percent of the world’s fresh water (E)将Baikal和北美5大湖直接进行比较,概念不对等, 应该是Baikal的水量和五大湖的水量进行比 较. 句子结构: More than 300 rivers drain..., which holds… fresh water, more than… 是否意味着 一部分 OF A + which，会有争议 因为which会指代A而不是 整体？ 而用同位语就不会出现这种歧义？ 63. (27740-!-item-!-188;#