分类信息
各地考试

当前位置:首页 » GRE考试 » 最新资讯 » 正文

2014年GRE考试阅读机经综合辅导(一)


时间:2014-04-29 来源:GRE考试网 浏览次数:232  【华夏培训网:中国教育培训第一门户

  新GRE高频阅读机经原文:蜜蜂升温  Ingestion of food containing spores(孢子) of the pathogenAscosphaera apis causes

     新GRE高频阅读机经原文:蜜蜂升温

  Ingestion of food containing spores(孢子) of the pathogenAscosphaera apis causes a fatal fungal disease known as chalk brood in honeybeelarvae. However, larvae must be chilled to about 30°C(normal brood-combtemperature is 33-36°C)for the disease to develop. Accordingly(因此), chalkbrood is most common in spring and in small colonies. A recentstudy revealed that honeybees responsible for hive-temperature maintenancepurposely raised the hives’ temperature when colonies were inoculated with A.apis. this “fever,” or up-regulationof temperature, occurred before any larvae died, suggesting that theresponse is preventative and that either honeybee workers detect the infectionbefore symptoms are visible or larvae communicate the ingestion of the pathogen.

  Temperature returned to normal by the end of the study, suggestingthat increased temperature is not optimal when broods are not infected, as well asthat the fever does not result merely from normal colony growth (i.e., anincrease in the number of workers available for temperature maintenance).

  【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(因病)死亡之前发生的.(这个现象)可能说明蜜蜂的这一反应(提高温度)是一个保护性措施.而且(还说明)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,(蜂房的温度)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.】

  24. The primary purpose of the passage is to

  (A) discuss the findings and implications of a particular study

  (B) illustrate a process that formerly had been misunderstood

  (C) outline the methods used to investigate a problem

  (D) provide evidence to support a controversial theory

  (E) contrast alternative interpretations of certain date

  25. According to the passage, researchersconcluded that fever in honeybee coloniesis preventative because their studyshowed that such fever

  (这题多数同学选的C.问的是为什么研究人员认为"发热"是保护行为)

  (A) does not occur when hive temperatures are within normal range 该行为不发生在蜂房温度正常的情况下.(应该非常好排除吧,升温和蜂房原来温度无关,只有感染了才会升)

  (B) protests adult bees from contracting chalk brood infection 防止成年蜜蜂接触感染.(升温的作用是防止发作,文章中没有提到是否能隔绝传染.)

  (C) occurs prior to the death of any larvae 在任何幼虫死亡之前发生.

  (文中原话,虽然直接得有点让人不敢选,但是确实是最佳答案.)

  (D) is more likely to occur in spring than in summer 相较于在夏天,更可能在春天发生. (than是GRE阅读中需要引起注意的词.文中没有明确指出,不如C来得更直接,而且有点答非所问.)

  (E) does not have an effect on uninfected broods 对于没有感染的蜜蜂没有影响.(答非所问).

  26. The passage implies that if hive temperature had not returned tonormal by the end of the study in question, a probableconclusion of the researchers would have been that

  (这题牵涉到对文章最后一句的理解,只要取反就可以了.所以我觉得是B,这题争议比较严重.其实最后一句的意思就是最终的实验结果(温度回归)说明暂时升高的温度不是蜂群的最爱---说明是不得以而为之;而后半句温度升高不仅仅是蜜蜂数量的增多,说明热量不是数量上升累积的结果而是有别的什么因素促成.换而言之还是说明了温度升高是有意识地保护行为.所以回答这题的时候把这两点的想法取反就OK了)

  (A) up-regulation of temperature is a preventative measure against chalkbrood 说明升温是保护性措施.(和上述说法取反后不同吧.)

  (B) honeybees are incapable of purposely raising hive temperatures 蜜蜂不能有意识地升高蜂房温度. (正确,符合上述第二个说法取反的结果).(第二种说法是说升温不是种群自然增大的结果,如果取反也不是这个吧)

  (C) A. apis cannot be completely eradicated throughup-regulationof temperature along 说明仅仅通过升温A不能完全被消除.(到底A有没有被消除实验没有说吧.) 






          GRE考试

下一篇:2014年GRE考试阅读机经综合辅导(二)

上一篇:暂无

推荐图文

热门点击排行

©2015 hxpx.com All Rights Reserved 滇ICP备13002816号-1
华夏培训网唯一网址www.hxpx.com