GWD-2-1

The four-million-year-old fossilized skeleton known as Lucy is so small compared with many other skeletons presumed to be of the same species, and so some paleontologists have argued that Lucy represents a different lineage.

1. presumed to be of the same species, and so
2. presumed to be of the same species that
3. presumed that they are of the same species, and so
4. that they have presumed to be of the same species, so that
5. that they have presumed are of the same species, and

这道题我分析句子结构是The......skeleton ......is so small......that some paleontologists ......

只有B符合这个结构。所以答案是B。另外

A. and so不符合语法，应该是so+从句

C. 同A

D.they have persumed应该用被动语态；时态应该是现在时；so that不符合语法

E.they have persumed应该用被动语态；时态应该是现在时；

不知道这么分析对不对，欢迎NN来指点。另外，GWD13套的第二套讨论怎么这么少，那不是白做了。

前人已经有讨论了，在gwd3里面。不好意思。

谢谢指点～