Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who systematically hunted big game much earlier than believed.
答案D (A) it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who
(B) it appears had been an ancient lakeshore hunting ground and is stunning evidence that human ancestors
(C) it appears to have been an ancient lakeshore hunting ground and is stunning evidence that human ancestors
(D) appears to be an ancient lakeshore hunting ground, stunning evidence that human ancestors
(E) appears that it is an ancient lakeshore hunting ground, stunning evidence of human ancestors who
101
The electronics company has unveiled what it claims to be the world's smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs less than 11 ounces.
答案D (A) to be the world's smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs (B) to be the smallest network digital camcorder in the world, which is as long as a handheld computer, weighing
(C) is the smallest network digital camcorder in the world, which is as long as a handheld computer, and it weighs
(D) is the world's smallest network digital camcorder, which is as long as a handheld computer and weighs
(E) is the world's smallest network digital camcorder, the length of which is that of a handheld computer, weighing
101题中说it claims为插入成分，这一现象大多数考生在此处为第一次遇到，因此很多考生会认为claim的正确搭配为claim to do something，因而排除BCD选项。实际上is和to be在选项中都是正确的表达：若为is，可理解为it claims是插入成分；若为to be，则可理解成what it claims to be…这一大家都很熟悉的表达。
我偏向于101题的解释，那么能把61题的it appeals看做是插入语吗？？
虚心求教！不胜感激！
不可以吧，把it claims理解为插入成分，是因为前面出现过it的指代对象The electronics company，但是it appears ，从逻辑上来理解，it是指the place，即what指代的对象，那么是不是有重复的问题呢？
-- by 会员 xAriAx (2010/7/4 1:24:36)
其实这个用我高中老师教的一个方法很容易解决。其实当what在句子中指代名词成分的时候可以将what还原成something that将其变成 一个简单的定从（这两个结构等价），这样让整个结构更清晰。
第一个 wooden spears from what it appears was 可以变成 wooden spears from something that it appears was 。很快我们就可以发现这里的it明显多余。第二个TEC has unveiled what it claims to be 可以变成TEC has unveiled something that it claims to be 这里it指代前面的TEC，后面的这个定从的结构是it claims sth to be ~~~ 是正确的。 -- by 会员 BreezyCipher (2010/8/17 14:32:32)
