请教GWD30-Q39

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

此题选D，不明白为什么用WERE？

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

此题选D，不明白为什么用WERE？

我是先看到句首的being China's first adminstrators ，注意這裡是複數

在來又看到後方的同位語，in the sense that they developed a ....

所以之後後方應該是the Shang，同時the Shang這個東西是複數，

因此可以刪除ABC，

最後是代名詞指代問題，E選項的its有問題~

所以選D