T-9-34没人问过~~请教高人~~看来是低级的题目把我难倒了~~

T-9-Q34.
                    

Just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the nautical archaeologist needs specialized knowledge of the history and theory of ship design in order to understand shipwrecks.

A.      just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the

B.       just as an archaeologist who needs a background in art history to evaluate finds of ancient art, a

C.      just as an archaeologist needs a background in art history to evaluate finds of ancient art, so a

D.      like the archaeologist who evaluate finds of ancient art history and requires a background in art history ,so the
                    

E.       as evaluating finds of ancient art requires an archaeologist who has a background in art history, so the

答案是C

我想问问JUST AS \LIKE \SO后面是不是都要加句子,如果不是的话，想请问它们后面都应该跟什么~

以及D错在哪里？？

谢谢各位~~~!!!