求教大牛牛 争议题

In addition to being China' s first administrators, in the sense that they developed a coherent bureaucracy for their empire, the first literate culture in East Asia were the Shang, and they were well known for crafting ornate bronze ritual vessels.

(A) the first literate culture in East Asia were the Shang, and they were well known for crafting

(B) the first literate culture in East Asia were the Shang, well known as the crafters of

(C) the Shang, as the first literate culture in East Asia, is well known for its crafting

(D) the Shang were the first literate culture in East Asia and are well known as the crafters of

(E) the Shang were the first literate culture in East Asia and well known for its crafted

I pick the answer B

I think it should be right but I don know why.sorry.

1 In addition to being China' s first administrators，决定了主句的主语必须是administrator(e.g人,here should be Shang)

2 known as/known to be

  known to do永远错

be known to do 没有吗？

XDF的老师说有的 是被知道做某事的意思

The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to the twelve the number of satellites now known as orbiting the distant planet.

A  which doubles to the twelve the number of satellites now known as orbiting
                    

B  doubling to the twelve the number of satellites now known to orbit

C  which doubles to twelve the number of satellites now known in orbit around

D  doubleing to twelve the number of satellites now known as orbiting

E  which doubles to twelve the number of satellites now known that orbit

官方答案是B 照guyiyu1987的说发这个题目很难选出答案了

不好意思，我刚查了字典：

是有三种用法：known as/to be/to do