The market for recycled commodities like aluminum and other metals remain strong despite economic changes in the recycling industry.

1. commodities like aluminum and other metals remain
2. commodities like those of aluminum and other metals are remaining
3. commodities such as aluminum and other metals remains
4. commodities, such as aluminum and other metals, remain
5. commodities, like the commodities of aluminum and other metals, remains

搜了原来的解释，有点被说服是E对，是做比较，但是还是不知道C错在哪里，请求达人帮助来～～

我还是觉得答案是C！

E即使是做比较，like+n也应该放在句子前面，而且E的比较对象不一致。

我也觉得C对: like 不用作举例,如举例应该是such as.

上XDF的时候，老师专门说了LIKE不举例，这里选E的话，明显想表达的意思就是举例，所以请NN给个解释。

但是如果选C的话，SUCH AS 列举的是aluminum and other metals ，不是commodities ，所以好象也不对

我想了一下，觉得应该是E。

C错在such as aluminum and other metals前后要加逗号。

大家可以讨论一下。

支持A.

因为A中就只有一处不妥:which的指代问题.
而B有两处不妥:
① they are mountain dwellers中的they指代不清,可以是the Rocky Mountains或elk
②The fact that elk now live almost solely in the Rocky Mountains would make it seem that they are mountain dwellers, but they once ranged over virtually all of the continental United States except for a small strip in the extreme Southwest. 句中是红字部分与兰字部分对比，从结构上看这两部分可以都是seem的从句，此时一个事实说明了两个截然相反的事实．这个问题在A中就没有，因为Elk now live almost solely in the Rocky Mountains, which would make it seem that elk are mountain dwellers, while they once ranged over virtually all of the continental United States except for a small strip in the extreme Southwest. 句中红字部分与兰字部分对比，which...是红字部分的定语从句，结构很清楚．