GWD-TT-22

Q15:

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

答案选的B,不懂

答案选的B,不懂

原文The steel industry has changed radically over the last two decades是主句，as到结束是原因状语从句，进一步说明钢铁产业变化的原因。

abcde中只有as能引导原因状语从句, 因此CDE的with, while,和and都改变了原句的意思, 排除。

再看选项结尾有that和没有that的区别，没有that的话，such as Bethlehem Steel后面就直接跟了个谓语动词conducted，而such as后面不能跟句子，错误。

所以选b。

从句的主干就是companies have downsized, or shut down.

with 后面不能跟从句，所以2个with排除，while表示转折语气，and表示并列语气都

不对，这里用as的伴随语气最合适，此外，such as 后的从句是插入语，所以逗号和that

都不能少。