请教Prep 1-110

fengyeming

The federal immigration station on Ellis Island, which was first opened in 1892, then rebuilt in 1900, processing nearly three quarters of all immigrants entering the United States in the first quarter of the twentieth century.

(A) The federal immigration station on Ellis Island, which was first opened in 1892, then rebuilt in 1900, processing nearly three quarters of all immigrants entering the United States in the first quarter of the twentieth century.

(B) Having processed nearly three quarters of all immigrants who enter the United States in the first quarter of the twentieth century, the federal immigration station on Ellis Island first opened in 1892 and then was rebuilt in 1900.

(C) Processing nearly three quarters of all immigrants to enter the United States in the first quarter of the twentieth century, the federal immigration station on Ellis Island first opened in 1892, being rebuilt in 1900.

(D) First opened in 1892, then rebuilt in 1900, the federal immigration station on Ellis Island processed nearly three quarters of all immigrants entering the United States in the first quarter of the twentieth century.

(E) Of all immigrants to enter the United States in the first quarter of the twentieth century, the federal immigration station on Ellis Island processed nearly three quarters of them, having first opened in 1892 and rebuilt in 1900.

答案选D，我的问题是then前面不是一定要有and的吗，这里then前面无and怎么会是对的呢。

quting

A选项缺乏主语。
B应该是被开，所以应加“was"。而且不用句首的have
C选项同样是被开的问题，并且“being rebuilt”表示正在被建，与原意不符合
E选项句首跟逻辑主语关系不对，错
这是我的一点浅见，望指正，谢谢！

fengyeming

我是想问and then的问题，题目本身的问题我想通了，就是and不是应该跟then的吗