885-6-17,thanks

windcolour

For members of the seventeenth-century Ashanti nation in Africa, animal-hide shields with wooden frames were essential items of military equipment, a method to protect warriors against enemy arrows and spears.

(A) a method to protect

(B) as a method protecting

(C) protecting

(D) as a protection of（C）

(E) to protect

Why A not correct?

carolhide

请LZ下载大全注释（置顶复习资料），或查阅置顶讨论连接，相信可以解决大部分问题，如仍然未能解决后发帖询问，并在标题中标明已查资料。感谢配合，预祝复习顺利！

306, og-039

Choice C is best because the participle protecting begins a phrase that explains what the shields did. Choices A and B awkwardly use the singular word method to refer to items of military equipment rather than to the use of such items. Also, a method of protecting would be more idiomatic than a method to protect in A or a
                method protecting in B. In B and D, as is incorrect; also, a protection in D has no noun for which it can logically substitute. Choice E is incomplete; used to protect would have been acceptable.

E中to do本身单独用一般有表目的意味，这里没这个意思。“逗号+to do ”放句未, 多半错。