两道GMAT语法题求解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 weighsB.to be the smallest network digital camcorder in the world,which is as long as a handheld computer,weighingC.is the smallest network d

两道GMAT语法题求解
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
我觉得D和合适啊,B “which” refers to the world,
Regardless of their form or function,all aerodynamically enhanced,curved objects made for throwing have been called boomerangs by non-Australians even since 1788,when Europeans saw Dharug-speaking men tossing “bumariny” in the area later known as Sydney.
A.Regardless of their form or function,all aerodynamically enhanced,curved objects made for throwing have been called boomerangs by non-Australians ever since 1788,
B.Regardless of their form or function,any aerodynamically enhanced,curved object made for throwing has been called a boomerang by non-Australians ever since 1788,
C.Ever since 1788,non-Australians have called all aerodynamically enhanced,curved objects made for throwing boomerangs,regardless of their form or function,from
D.Ever since 1788,any aerodynamically enhanced,curved object made for throwing has been called a boomerang by non-Australians,regardless of its form or function,from
E.Non-Australians have called all aerodynamically enhanced,curved objects made for throwing boomerangs ever since 1788,regardless of their form or function,from
我觉得A开头有个their,并没有指代对象啊.为什么要选A不选D?