GWD 21-27
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.
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 (B)
E. is the world’s smallest network digital camcorder, the length of which is that of a handheld computer, weighing
CLAIM TO BE 所以应该在AB中如果选A,it多余.如果B中的WHICH 在ＷＯＲＬＤ 后好像也不好
如果你选A 的话，WHAT 作什么成分呀！
WHAT 不是做CLAIM 的宾语吗？这里应该是UNVEILED 引导宾语从句， 省略TAHT ，WHAT IT CLIAMS 做从句的主语。 欢迎讨论！
我不是说选A,我是觉得AB都不好,但到底哪个稍微好一点呢?
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.
我觉得还是B好一点吧，A中两个it指代不同对象，存在指代不清的问题
D。AB肯定要排除的呀！句子结构不对呀！
我选B,what做unveil的宾语，what=it claims to be sth.
后面是which引导的定语从句和weighing分词短语一起修饰sth.
但是BCD的哪个is结构怎么排除不知道，感觉没啥不对。
继续求教。。。
难道WHAT 既做UNVEIL 的宾语有做CLAIM的宾语，不明百？
有一点还请大家确认，是否有UNVEIL STH TO BE 用法，该题STH 指的是WHAT IT CLAIMS 。
还有一点：UNVEIL 能否跟THAT 从句。知道了着两点答案也就出来了。
如果选Ｂ，这里的结构是claim sth. to be sth.没有查到这种用法．并且后面的weighting修饰谁也不好说．长和重应该是并列关系吧？
如果选Ｄ，it claim就当做插入语．unveil what is ...好象可以接受吧？
大家帮忙再看看
Sony has unveiled what it claims is the world's smallest network digital camcorder, measuring the length of a handheld computer and weighing less than 11 ounces.
從google 上查到的ETS應該是根據這SONY原先的產品介紹詞改寫的，供做參考。
我选D,
至少B,C不对，which在B,C中修饰“the world",意思不对。
A 中的“and it weights"不对，前面有一个it， ”what it claims"是指 “the electronics company",后面的”it weights"中的it是指the digital camocorder,一句中出现两个it指不同的东西，不对。
E中的"the length of which is that of a handheld computer" 读起来真罗嗦。
大家看呢？
顶，这个题我的答案给的是b
a, and it weights, wrong, creat a it clause cannot parallel
c， the same reason
d, e 就不知道怎么排出了请nn指点阿
顶， 我选b答案选d
I vote for D.
it claims是插入语，起强调作用。通常应该用，逗开。但省略逗号并不能算错。A/B 错的太明显了。
Sony has unveiled what it claims is the world's smallest network digital camcorder, measuring the length of a handheld computer and weighing less than 11 ounces.
從google 上查到的ETS應該是根據這SONY原先的產品介紹詞改寫的，供做參考。
如果是这样, 那真的应该选D 了.
不要争了，我在GMATPREP里遇到了同一题，答案就是D。
看整个主句：unveiled的宾语——what从句，用to be的结构是不完整的。
而且B,E中weighing的指代有歧义; A,C中多了it。
.
这题我选D，what it claims 是主语从句。请大牛指教。。。
D就D吧
看到楼上的这个句子．．．我觉得答案肯定是Ｄ！！！！！
后面的measure&weigh都是修饰camcorder的，而不是handheld computer的～～～～
B.unveiled what it claims to be = sth that it claims to be,当中牵涉到一个claim sth to be的结构。字典上没有查到这个用法。但是claim
to do这个结构是有的（见下面）。
D. unveiled what it claims is =
unveiled sth that it claims (that) is
这里what
it claim是做unveil的宾语。It claims，我认为不是插入语，因为如果去掉，句子变成unveiled
what is the world’s smallest digital camcorder,既然已经是the world’s smallest digital camcorder，还用what，不是多余么？所以我觉得what it claims is 整体是个句子，省略了claim后面的that。还原一下：
unveiled sth that it claims （that）is the world’s smallest digital camcorder
第一个that是引导宾语从句，修饰sth。第二个that是引导claim的宾语从句。之所以is前面没有名词，是因为该名词就是第一个that。
B和D的区别还在于后面的weigh。长度和重量应该都是camcorder的属性，应该是并列关系，而不是伴随关系。所以D正确。 Claim做动词的用法（Longman）： To declare to be true; state, especially in the face of opposition; e.g. They claim to have discovered/claim that they have discovered a cure
maintain
for the disease, but this has not yet been proved.
up
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