OG 12 diagnostic test 40 求指导

wangxinlin

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
Which 为何时代不明？That 修饰 laws为什么？按照Manhattan 书中说的就近修饰原则的例外中不是修饰one 么？

bobdog159

楼主要看which 和 that 后面定语从句的内容。an observation about electric current 是 Kirchhoff‘s laws的内容而不是patten的内容，所以 E选项 that一定是修饰 laws的而不是patent

B选项同理，which从句修饰laws 但是竟然有了单数 was 使得which就有指代patent的嫌疑。所以whcih指代不清

wangxinlin

谢谢~是不是说Manhattan中的A “mission-critical" modifier falls between 的原则中，出现例如“of-phase"并不是一定要跳过of短语修饰前面的名词，也可以修饰of后面的名词，主要是看从句的内容？