GWD 20-17

justabeginning

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.

A.     as large, integrated companies such as Bethlehem Steel

B.     as large, integrated companies, such as Bethlehem Steel, that

C.     with large, integrated companies, such as Bethlehem Steel, that

D.     while large, integrated companies, such as Bethlehem Steel, that

E.     and large, integrated companies, such as Bethlehem Steel

zhangws

这题我猜B。。

LoveY

这题应该是B,因为当中的句子是插入句，并且有2个谓语conducted 和have downsized.A,E缺that,一句句子2个谓语错。C用with,那么have downsized要用非谓语，错。D表示转折，错。

问一下楼主，GWD20楼主是那里找到的？？

jamesyl327

Why not A. The purpose of the sentence is to compare

The steel industry has changed radically, as xx companies (once conducted operations ... at one hand...at the other) have greatly downsized, or ...shut down.

sealg

这一题我是这样理解的

Agreement：排除A、E（如果不是用Appositive的方式来举例说明，Bethlehem Steel会变成have的主语，once conducted修饰BS，加上关系代名词that后可以解决这个问题，that指代companies）

Rhetorical：排除C、D、E（as表原因、with表伴随、while表转折、and表并列）

linmeimeiei

I agree B . we can see the v of whole sentence is have downsized .so the conducted is in subgroup .for D ,the as have the meaning of while .