3月阅读鸡精 大搜索（之）员工跳槽 借刀杀虫 中世纪领主剥削农奴

建议用：

 Google学术搜索
 

google scholar search

本次搜索任务：

RC背景信息：

老鸡精欠缺，大家继续搜，请直接跟帖：

740 V42 JJ作者回忆：

JJ作者回忆：

一篇是讲毛毛虫，植物，还有捕捉一种毛毛虫的动物，这三者之间的关系，这篇是最长的，我没太看懂....不好意思啊各位...

主要是讲什么/怎么样导致植物分泌一种物质使捕食者来消灭毛毛虫

搜到的类似JJ（经JJ作者确认是这个）：

问题是现在还没有清晰的关键字能让人搜。。。

植物利用黄蜂攻击毛毛虫
        

[版本一] 植物防御黄蜂攻击什么的，释放物质来抵御什么的
            

[旧JJ]

是不是这个？

Parasitic and predatory arthropods often prevent plants from being severely damaged by killing herbivores as they feed on the plants. Recent studies show that a variety of plants, when injured by herbivores, emit chemical signals that guide natural enemies to the herbivores. It is unlikely that herbivore-damaged plants initiate the production of chemicals solely to attract parasitoids and predators. The signaling role probably evolved secondarily from plant responses that produce toxins and deterrents against herbivores and antibiotics against pathogens. To effectively function as signals for natural enemies, the emitted volatiles should be clearly distinguishable from background odors, specific for prey or host species that feed on the plant, and emitted at times when the natural enemies forage. Our studies on the phenomena of herbivore-induced emissions of volatiles in corn and cotton plants and studies conducted by others indicate that (i) the clarity of the volatile signals is high, as they are unique for herbivore damage, produced in relatively large amounts, and easily distinguishable from background odors; (ii) specificity is limited when different herbivores feed on the same plant species but high as far as odors emitted by different plant species and genotypes are concerned; (iii) the signals are timed so that they are mainly released during the daytime, when natural enemies tend to forage, and they wane slowly after herbivory stops.

England中世纪领主（lord）和农奴（serf）关系

有一篇说England中世纪领主（lord）和农奴（serf）的关系的，首先介绍领主和农奴的关系。说
领主因为拥有土地权就可以剥削农奴：任意征收财产，以及税收，etc，还有几项忘记了。（有题except细节题，定位就可以找到答案）
这段最后说由于领主只对个人享受感兴趣，而农奴收压迫等，造成中世纪英国农业生产，科技等都停滞。（有道infer题，问作者
同意以下什么观点，就是这句的paraphase）
  第二段，话锋一转，说尽管如此，还有其他原因。还应该考虑non-serf的因素。（还是道细节体，问non-serf通过
什么方式影响）
  第三段，做个总结。后面印象不深了，因为没有题。

关键词：England 中世纪（middle ages） 领主（lord）农奴（serf）

3楼新加

England中世纪领主（lord）和农奴（serf）关系，

大家一起来搜！