请教gwd-4-Q17

kudoucliff

The steel industry has changed radically over the last two decades, as large, integrated companies such as Bethlehem Steel once conducted operations from mining at one end of the process to shipping at the other have greatly downsized, or in some cases shut down altogether.

as large, integrated companies such as Bethlehem Steel
as large, integrated companies, such as Bethlehem Steel, that
with large, integrated companies, such as Bethlehem Steel, that
while large, integrated companies, such as Bethlehem Steel, that

and large, integrated companies such as Bethlehem Steel
这题答案是B，D为什么不行啊？文中也存在对比关系啊。。。

vivianxiong

我觉得文中是要表示的一种cause-effect，所以B中的as比D中的with好~

书博会

这道题不是对比关系，是并列关系。large, integrated companies such as Bethlehem Steel是The steel industry 的一个例子。其他四个选项也在试图举例子。

kudoucliff

啊！明白了！谢谢！