OG SC D40题不会做，求助！

azhongzhong

D40.  In 1995 Richard Stallman, a well-known critic of the patent system, testified in Patent Office hearings
that, to test the system, a colleague of his had
managed to win a patent for one of Kirchhoff’s (laws,
an observation about electric current first made in
1845 and) now included in virtually every textbook of
elementary physics.
(A)  laws, an observation about electric current first
made in 1845 and
(B)  laws, which was an observation about electric
current first made in 1845 and it is
(C)  laws, namely, it was an observation about
electric current first made in 1845 and
(D)  laws, an observation about electric current first
made in 1845, it is
(E)  laws that was an observation about electric
current, first made in 1845, and is
此题我选的C,认为 observation不能做laws的同位语，直接把正确选项A排除了，请问我哪里错了？谢谢！

azhongzhong

啊啊，没人回答，自己顶一个！！！

Tobelogical

In 1995 Richard Stallman, a well-known critic of the patent system, testified in Patent Office hearings that, to test the system, a colleague of his hadmanaged towin a patent for one of Kirchhoff’s (laws, an observation about electric current first made in 1845 and) now included in virtually every textbook of elementary physics.

observation修饰的是阴影部分，不是laws。所以后面只能用主格结构，an observation + 介宾结构 and +分词结构

gongxiaorong

an observation 可以做同位语修饰laws啊而且比其他选项的限定性的从句修饰好。C 选项It指代不清，最重要的是使句子结构出现了问题,需要去掉It was.另外hearings是听证会，主谓宾是Richard证实了that。E选项that从句修饰laws有限定性的意思，而句子描述laws不需特指。