请教and和as well as同时出现的OG SC题目

CathyGYM

Early administrative decisions in China’s Ming Dynasty eventually caused a drastic fall in tax revenues, a reduction in military preparedness, the collapse of the currency system, and failed to make sufficient investment in vital transportation infrastructure.

• Athe collapse of the currency system, and failed 分析该选项
• Bthe collapse of the currency system, and failing 分析该选项
• Cand the collapse of the currency system, also failed 分析该选项
• Dthe collapse of the currency system, as well as failing 分析该选项
• Eand the collapse of the currency system, as well as a failure 分析该选项
  

答OA: E.
b 根据都应该是名词，只能选a failure的项。但是根据平行，为啥可以既有and又有as well as。理想状态不应该是：the collapse of the currency system, and a fail或者the collapse of the currency system, as well as a failure

zoe爱猕猴桃

the collapse of the currency system, and a fail或者the collapse of the currency system, as well as a failure，这两种形式才不可以内。

and并列，第三个前面一定要加and,不能四个并列


另外but和as well as的区别，as well as是前面的补充说明，and并列两个无关词

Ladymaemae

最终还是看语义，作为名词failing（尤指性格上的）弱点，failure失败。投资失败。