10.21 放小狗攒人品

ineternity

数学：1.（1010101）^2-(1010100)^2 求这个位数的和，答案是7
2.x+y<8, 求xy 共有几种答案
3.参加啊meeting和参加picnic 的both的是70人，只参加一个的是120人，参加meeting的比参加p活动的多50人，问参加meeting的有多少人，我选了155
4.x＝a乘根号b ，y＝c乘根号d 好像是说根号（ab）不是整数，问根号（xy）是不是整数 条件1是根号（ad）是整数 条件2是根号（bc）（不太确定）
5.三个女的三个男的，男女两两隔开站，求共有几种站法
6.A (3,0), B(0,4) 有一条线a  3x-4y=0，点C在line a 上，求AC。 画图的化很容易求得，用勾股定理，我记得我的答案是12
阅读：1.河流蒸发，一个科学家建了一个三维模型 ，jj里有
2.bilingual 的，jj里有
3.female和male 鸟类，jj里没找到，大概是 有时候会让female鸟一直呆在巢穴里保护新生的蛋。为了不让female鸟离开鸟巢，male鸟会给female鸟带回食物。尤其是在极端天气的时候。当有捕食者在附近的时候，male鸟会来回的更加频繁，大概只记得这些了o(╥﹏╥)o
作文：有一个衣服制造商是一个新公司，制造的衣服销量很好，都是当时的年轻人喜欢的最新潮流。于是这个制造商决定自己开零售店自己来卖产品。该公司决定开125 家retail stores in the shopping malls。作者说这个公司一开零售店销量马上就会很好，并由此提出自己的优势，除了之前提供给零售商的衣服有好的销量外，还有好的管理。除此之外，该公司的CEO之前是个rock star，，曾经获得过许多奖，所以会有star power，由此得出公司自己开零售店会有很好的销量

Yennifer_Eve

感谢分享~勾住第一题确认是7吗？我看数讨军写的是16呢

ineternity

Yennifer_Eve 发表于 2018-10-21 22:22
感谢分享~勾住第一题确认是7吗？我看数讨军写的是16呢

我也看了，（1010101+100100）（1010102-1010100）=2020201，我得出的是7，你可以去考场的时候看具体题目(#^.^#)，ps：我刚刚看到另一个10.19的答案也是7~

billyisfragile!

是原文吗？
JOURNAL ARTICLE
Males Feeding Females during Incubation. I. Required by Microclimate or Constrained by Nest Predation?
Thomas E. Martin and Cameron K. Ghalambor
The American Naturalist
Vol. 153, No. 1 (January 1999), pp. 131-139
Published by: The University of Chicago Press for The American Society of Naturalists
DOI: 10.1086/303153
https://www.jstor.org/stable/10.1086/303153
Page Count: 9


Abstract
Nest attentiveness (percentage of time spent on the nest) during incubation represents a parent‐offspring conflict; incubating birds must balance a trade‐off between caring for embryos by staying on the nest versus caring for themselves by getting off the nest to forage. For species in which females are the sole incubator, males can potentially affect this trade‐off and increase nest attentiveness by feeding incubating females on the nest (incubation feeding). Increased nest attentiveness may be required when local microclimate conditions are harsh and thereby require greater incubation feeding (microclimate hypothesis). Alternatively, incubation feeding may be constrained by risk of attracting nest predators (nest predation hypothesis), which in turn may constrain female nest attentiveness because of energy limitation. We show that incubation feeding rates are much greater among cavity‐nesting than among coexisting open‐nesting birds. Under the microclimate hypothesis, the greater incubation feeding rates of cavity‐nesting birds generate the prediction that microclimate should be harsher than for open‐nesting birds. Our results reject this hypothesis because we found the opposite pattern; cavity‐nesting birds experienced more moderate (less variable) microclimates that were less often below temperatures (i.e., 16°C) that can negatively impact eggs compared with open‐nesting species. In contrast, incubation feeding rates were highly negatively correlated with nest predation both within and between the two nest types, supporting the nest predation hypothesis. Incubation feeding in turn was positively correlated with nest attentiveness. Thus, nest predation may indirectly affect female incubation behavior by directly affecting incubation feeding by the male.


Avian embryos can suffer fitness costs such as increased mortality and reduced developmental rate with decreasing nest attentiveness (percentage of time that a parent sits on the nest) during incubation (White and Kinney 1974; Ca- rey 1980; Lyon and Montgomerie 1985). Thus, high at- tentiveness should be a preferred state, possibly being somewhat relaxed in species with well-insulated nests (White and Kinney 1974). However, incubating birds are often constrained in their nest attentiveness because of limited energy resources (White and Kinney 1974; Martin 1987). Indeed, many birds require short recesses from the nest to obtain exogenous food resources to allow contin- ued incubation. In the many species in which females incubate alone, males may reduce recesses and increase attentiveness by bringing food to incubating females and supplementing their energy resources. Such incubation feeding has been reported in a wide diversity of bird taxa (Lack 1940; Kendeigh 1952; Silver et al. 1985), and intraspecific studies have shown that greater incubation feeding can yield increased attentiveness (von Haartman 1958; Lyon and Montgomerie 1985; Lifjeld and Slagsvold 1986; Halupka 1994). Yet the influence of incubation feeding on nest attentiveness across species is unexamined despite the fact that incubation feeding rates and nest attentiveness vary extensively across species (e.g., Kendeigh 1952; Silver et al. 1985).