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题库 / OG12-SC-30
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 method to protect
as a method protecting
protecting
as a protection of
to protect
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C 分词要么伴随，要么结果；要是是结果，感觉很奇怪；但是如果是伴随，个人感觉又会歧义，到底是修饰items, equipment, 还是主语?
A同位语从句，前面item不是一种方法，
C 逗号v-ing在句尾做结果或伴随状语，修饰的是前面整个clause
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