查看: 3383|回复: 2

[其它] 求问一道鸡精阅读题 [复制链接]

Rank: 3 Rank: 3

声望: 40
寄托币: 397
注册时间: 2012-6-1
精华: 0
帖子: 53

发表于 2017-4-27 08:19:21 |显示全部楼层

Biologists have long debated about whether egg production in birds is biologically highly costly,
some theorizing that egg production is energetically or nutritionally demanding. Lack, however,
suggested that clutch size—the number of eggs a bird lays per breeding cycle—is far below the
potential limit of egg production. He suggested that clutch size had instead evolved in relation to
the number of young that the parents could successfully rear. Subsequently, most studies focused on limitations operating during chick rearing, particularly among altricial species (species in which the parents feed their young in the nest). Lack later recognized that in precocial species (species in which young feed themselves), clutch size might be explained by different factors—the availability of food for egg-laying females, for example.

Consider each of the choices separately and select all that apply.
2. The passage suggests that Lack would agree with which of the following statements about
factors affecting clutch size in birds?
A. In altricial species, clutch size is determined primarily by factors operating after eggs are laid.
B. In precocial species, clutch size is determined primarily by factors operating after eggs are laid.
C. In many bird species, clutch size generally remains well below the potential limit of egg
production

答案说选AC，但是我并不觉得C是对的，因为L得出这个结论的时候没有意识到还有P类的存在。

相关帖子

回应

使用道具举报

痴人说梦wh
UID：3568907

中级会员

Rank: 4

声望: 95
寄托币: 1246
注册时间: 2014-10-13
精华: 0
帖子: 130

发表于 2017-4-27 15:22:09 |显示全部楼层

个人认为文章不是这个意思。L后来意识到，对于P类来说，clutch size可能和其他的因素有关。这个其他的因素不包括“鸟爸妈能养多少孩子”。但是P类的clutch size依然是少于potential limit的，否则就不需要解释了，不是么？

逻辑如下：
生物学家一直吵吵，说鸟生蛋是不是很累啊很耗费精力啊，有些人说，鸟儿生蛋很累的啊它们有多努力你们造吗？
——但是，L他不同意，他认为，鸟儿一窝生的蛋的数量，还远远没有达到它们的极限！同志们你们还不够努力啊！
——L认为，鸟一窝生多少蛋，跟他俩累不累没啥关系，跟他俩养不养的起有关系。
——所以，L同学后来的研究，都在关注养小鸟的限制因素上，特别是A类鸟，它们特别负责，买不起学区房就干脆不生小孩！
——但是后来，L又发现，还有P类鸟，它们根本不养小孩！管生不管养诶！太不负责了吧！
——那那那怎么办呢。。。。如果按照L同学的理论，鸟生多少蛋取决于它们养不养的起，那怎么解释P类鸟的现象呢（请注意！这个现象的隐含条件就是，P类鸟生的蛋也少于它应有的极限！）。。。。只能说，P类鸟生的蛋数，还跟鸟妈妈的营养有关啦。。。

希望我解释清楚了。。。。我是还没有开始训练阅读的萌新，上面的胡言乱语是因为背单词背崩溃了，说的不对的地方望轻拍。。。。

使用道具举报