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本文为大家准备了GRE阅读经典文章实例分析，便于考生GRE考试备考。 Ingestion of food containing spores of the pathogen Ascosphaera apis causes a fatal fungal disease known as chalk brood in honeybee larvae. However, larvae must be chilled to about 30C for the disease to develop. Accordingly, chalk brood is most common in spring and in small colonies. A recent study revealed that honeybees responsible for hive-temperature maintenance purposely raised the hives temperature when colonies were inoculated with A.apis. this fever, or up-regulation of temperature, occurred before any larvae died, suggesting that the response is preventative and that either honeybee workers detect the infection before symptoms are visible or larvae communicate the ingestion of the pathogen. Temperature returned to normal by the end of the study, suggesting that increased temperature is not optimal when broods are not infected, as well as that the fever does not result merely from normal colony growth . 【文章说了一种病原体,简称A病原体.蜜蜂幼虫吃了含有A的食物之后,体内会长一种致命的菌简称CB.但是CB要在低于幼虫正常体温的情况下才会发作,所以CB主要是在春天侵害小规模的蜜蜂群. 最近一个研究发现.在蜂群感染了A之后,那些负责维持蜂房温度的蜜蜂会有意识地提高蜂房温度. 而这个发烧现象,或者说温度的提升是在没有一个幼虫死亡之前发生的.可能说明蜜蜂的这一反应是一个保护性措施.而且要么是那些蜜蜂在感染症状出现之前就发现了它们,要么就是幼虫把感染信息告诉了蜜蜂. 实验结束的时候,又恢复正常了,说明升高的温度并不是蜂群的最佳温度,也说明这个发烧现象不仅仅是蜂群数量增大的结果.】 | 
