[越毒]陆月叁起越毒（共59只，6/28-22:07更新）

elaine0925

呀~楼主16号哦~俺也十六号~不过第一次考~一起加油哈~

dingjingheart

感谢～～

亲亲小包子

谢谢楼主~~祝大家都考试顺利~~~

shevit

LZ加油啊~~~好像出来了很多新的~~~

nickolaswang

也是16号考，大家共勉

pygmysog

Lentic freshwater habitats in temperate regions exist along agradient from small ephemeral (短暂的) ponds to large permanentlakes.This environmental continuum is a useful axis for understanding how attributesof individuals ultimately generate structure at the level of the community. Community structure across the gradient is determined byboth (a) physical factors,such as pond drying and winter anoxia, that limitthe potential breadth (宽度) of species distributions, and(b) biotic effects mediated byecological interactions, principally predation, that determine the realized success of species.Fitness tradeoffs associated with a few critical traits of individuals oftenform the basis for species turnover along the gradient. Among species that inhabit temporary ponds, distributions areoften constrained because traits that enhance developmental rate andcompetitive ability also increase susceptibility to predators. In permanent ponds, changes in the composition ofmajor predators over the gradient limit distributions of prey species becausetraits that reduce mortality risk in one region of the gradient cause increasedrisk in other regions of the gradient. Integrated across the gradient, thesepatterns in species success generate distinct patterns in community structure. Additionally, spatial heterogeneity (空间异质性) amonghabitats along the gradient and the fitness tradeoffs (平衡)created by this heterogeneity may hold important evolutionary implications for habitats.

pygmysog

Galileo’s partinon quante seem to account for his curious physical treatment of vacuum(真空). Hisattention had been directed to failure of suction pumps (抽水泵) and siphons for columns of waterbeyond a fixed height. He accounted for this by treating water as a materialhaving its own limited tensile strength, on the analogy of rope or copper wire,which will break of its own weight if sufficiently long. The cohesion of matterseemed to him best explained by the existence of minute (微小的) vacuum. Notonly did he fail to suggest the weight of air as an explanation of the siphonphenomena (虹吸现象), but he rejected thatexplanation when it was clearly offered to him in a letter by G. B. Baliani. Yet Galileo was not onlyfamiliar with the weight of air; he had himself devised (设计) practicable methods for itsdetermination, set forth in this same book, giving even the correction for thebuoyancy (浮力) of theair in which the weighing was conducted.

脚板儿

今天学校没断网，就是等更新啊！一定要给力啊~~~六月的大牛们加油啊~~~

Isabella1989

9号考的孩子拜谢楼主，嘿嘿

夏天amy

楼主辛苦啊 我也是16号考 一起加油哦

问一下，那个背景材料 里面的文章是牛牛们回忆的原文么？