【正确答案】 C

【答案解析】由题干关键词camel定位到第一段第二句The camel，for example，can experience and bear an increase in the temperature of its body and its blood of 9°C without anything bad happening to it.说明沙漠骆驼能忍受体温上升高达9℃的剧烈变化，却对身体健康无碍。因此选[C]，同时排除 [B]。[A]和[D]原文未提及。