A、about a kilometre eachB、separated from each otherC、rooms built of limestone

游客2025-07-21  3

问题

选项 A、about a kilometre each
B、separated from each other
C、rooms built of limestone
D、what interest visitors most

答案 C

解析 由文章第四段“These caves are a group of large underground rooms made of limestone”一句可以看出。故正确的答案为C。
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