GWD21-Q27分词

ileisure

27. GWD21-Q27:
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
E.    is the world’s smallest network digital camcorder, the length of which is that of a handheld computer, weighing
答案是D，请问B 的weighing是修饰前面定语从句的主语还是整个主句的主语，我感觉应该是定语从句的主语，而且因为这个从句是主系表结构，所以最后的分词是可以修饰主语which,也就是camcoader的，不知道这样的理解是否正确，求大牛指导！！

hhftnt

为什么开头是is...不是to be...求大牛一起解答了。。