prep的一题，求句子的结构是怎样的

qiongle

New equipment and other improvements reduced the amount of time-from eleven hours in 1982 to six in 1988-needed by workers so that they could produce a ton of steel. Aneeded by workers so that they could produce Bneeded when workers are producing Cworkers need in producing Dworkers needed to produce Eworkers need for their producing of 答案D 句子结构是什么？前面已经是完整的一句话了New equipment and other improvements reduced the amount of time；中间没有任何连词吧，后面还能是一句话？workers needed to produce？整个句子结构是怎样的？有点晕啊，没连词就出现两句句子？

qiongle

自己顶上去，最近论坛木有人吗？

qiongle

自己顶一下，求解答

xiqiong

New equipment and other improvements reduced the amount of time-from eleven hours in 1982 to six in 1988- workers needed to  produce a ton of steel.
time-from eleven hours in 1982 to six in 1988- 后面- - 之间的是一个插入，解释TIME
看主干：New equipment and other improvements reduced the amount of time workers needed to  produce a ton of steel.
补充完整应该是 time that workers needed to produce a ton of steel.  ^^ lz明白了么~

kiwifoodtown

请注意that的省略。

qiongle

恩，没有注意that省略，这么一说就OK了