第10题: [单项选择]Which of the following is NOT commonly available for building houses in the Arctic Circle A. Stone. B. Animal bones. C. Timber. D. Snow and ice. 参考答案:C 答案解析:本题询问在北极圈建造房屋的建筑材料。相关语句为第三段中间的“Other than this driftwood,the only available building materials are sn
第11题: [多项选择]口对鼻人工呼吸适用于() A. 牙关紧闭者 B. 婴儿 C. 儿童 D. 口周严重外伤者 E. 成人 参考答案:A, D