l两道GWD语法求教， 百思不得其解

1：The market for recycled commodities like aluminum and other metals remain strong despite economic changes

  in the recycling industry.

   A. commodities like aluminum and other metals remain

   B. commodities like those of aluminum and other metals are remaining

   C. commodities such as aluminum and other metals remains

   D. commodities, such as aluminum and other metals, remain

   E. commodities, like the comodoties of aluminum and other metals, remains

 答案给的是E， 百思不得其解，为什么不是C。 like不能用来举例应用Such as. 可是为啥选E呢。 请

高手指教。

2；

 Charles Lindbergh, for his attempt at a solo transatlantic flight, was very reluctant to have any extra weight on his plane, he therefore refused to carry even a pound of mail, despite being offered $1,000 to do so.

1. Charles Lindbergh, for his attempt at a solo transatlantic flight, was very reluctant to have any extra weight on his plane, he therefore
2. When Charles Lindbergh was attempting his solo transatlantic flight, being very reluctant to have any extra weight on his plane, he
3. Since he was very reluctant to carry any extra weight on his plane when he was attempting his solo transatlantic flight, so Charles Lindbergh
4. Being very reluctant to carry any extra weight on his plane when he attempted his solo transatlantic flight was the reason that Charles Lindbergh
5. Very reluctant to have any extra weight on his plane when he attempted his solo transatlantic flight, Charles Lindbergh

  答案是E， 为什么不是A呢。

求高人指点！ 

第一题，答案应该是C，GWD有时候是有错误答案的！LZ可以搜索下帖子看看以前的讨论

第二题，答案是E没错！

A错在2个句子之间没有连词