求jj 阅读 14篇GWD答案。。。

cl409454429

14. 恐龙恒温or 变温
[V1]By 华仔
Para 1 有一个科学家在研究恐龙是恒温动物endotherm还是变温动物ectotherm，然后他通过恒温动物的的骨骼里通常都有abundant的经脉和组织等类似的东东，在动物幼年是就需要very active才能提供足够的能量去成长。而这个人在恐龙的fossil中发现了这种骨骼，然后就推定恐龙是恒温动物。Para 2 有另一个科学家反对上面这个观点。他通过另一个实验来证明他的观点。他把endotherm和ectotherm动物混合放到active的环境和quiet的环境中。发现在active环境中的动物都会发展出有abundant这些东东的骨骼，而在quiet的环境中的动画却没有发现有这个东东。因此，这个科学家反驳了上面的观点。

[v2]By supersnake0731
恐龙到底是cold-blood还是warm-blood的。第一段说一个学者P根据一个实验证明恐龙是冷血的，第二段另一个学者O做了一个实验反驳了他的观点，说他做的实验不能反映恐龙是冷血的（并没有反对说恐龙不是冷血的，只是说他这个实验不对） @+!d@`w:z2C}Gi}fE$r\35  JT-Zo OZ{XtxNhz[v`<I  恐龙是否为恒温动物的。第一段一个人说由于XXX，所以恐龙是恒温动物。第二段来了另一个人，举了一些反证，说明第一人的观点错误。

[V3]By Deeplus
碰到了恐龙那篇。第一段，说有个A君发现有个什么B物质可以测出动物是热血动物。结果发现恐龙体内有B物质，所以它就是热血动物。第二段，说C君觉得A的发现就是一坨啊，因为他没考虑动物的运动程度，C做了个实验发现在动物运动程度剧烈的时候热血和冷血动物身体里都有B物质。
补充：（很多人说这篇GWD像寂静，我就把它粘贴过来了）
GWD-TN7-Q33-Q36
Scientists studying the physiology of dinosaurs have long debated whether dinosaurs were warm- or cold-blooded. Those who suspect they were warm-blooded point out that dinosaur bone is generally fibro-lamellar in nature; because fibro-lamellar bone is formed quickly, the bone fibrils, or filaments, are laid down haphazardly. Consistent with their rapid growth rate, warm-blooded animals, such as birds and mammals, tend to produce fibro-lamellar bone, whereas reptiles, which are slow-growing and cold-blooded, generally produce bone in which fibrils are laid down parallel to each other. Moreover, like the bone of birds and mammals, dinosaur bone tends to be highly vascularized, or filled with blood vessels. These characteristics, first recognized in the 1930’s, were documented in the 1960’s by de Ricqlès, who found highly vascularized, fibro-lamellar bone in several groups of dinosaurs. In the 1970’s, Bakker cited these characteristics as evidence for the warm-bloodedness of dinosaurs. Although de Ricqlès urged caution, arguing for an intermediate type of dinosaur physiology, a generation of paleontologists has come to believe that dinosaur bone is mammalianlike. In the 1980’s, however, Bakker’s contention began to be questioned, as a number of scientists found growth rings in the bones of various dinosaurs that are much like those in modern reptiles. Bone growth in reptiles is periodic in nature, producing a series of concentric rings in the bone, not unlike the growth rings of a tree. Recently, Chinsamy investigated the bones of two dinosaurs from the early Jurassic period (208-187 million years ago), and found that these bones also had growth rings; however, they were also partially fibro-lamellar in nature. Chinsamy’s work raises a question central to the debate over dinosaur physiology: did dinosaurs form fibro-lamellar bone because of an innately high metabolic rate associated with warm-bloodedness or because of periods of unusually fast growth that occurred under favorable environmental conditions? (Although modern reptiles generally do not form fibro-lamellar bone, juvenile crocodilesraised under optimal environmental conditions do.) This question remains unanswered; indeed, taking all the evidence into account, one cannot make a definitive statement about dinosaur physiology on the basis of dinosaur bone. It may be that dinosaurs had an intermediate pattern of bone structure because their physiology was neither typically reptilian, mammalian, nor avian.

GWD-9-Q33 G-9-Q33:
The author of the passage would be most likely to agree that the “caution” (line 29) urged by de Ricqlès regarding claims about dinosaur physiology was

unjustified by the evidence available to de Ricqlès
unnecessary, given the work done by Bakker and his followers
indicative of the prevailing scientific opinion at the time
warranted, given certain subsequent findings of other scientists
influential in the recent work of Chinsamy
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GWD-9-Q34 G-9-Q34:
The primary purpose of the passage is to
discuss the influence on other scientists of Bakker’s argument concerning the warm-bloodedness of dinosaurs
provide evidence that supports the claim that dinosaurs were cold-blooded
challenge the contention that dinosaur bone tissue is innately fibro-lamellar
evaluate the claim that dinosaur bone tissue provides evidence for the warmbloodedness of dinosaurs
resolve the disagreement between de Ricqlès and Bakker over the nature of dinosaur physiology
----------------------------------------------------------------------
GWD-9-Q35 G-9-Q35:
According to the passage, the discovery of growth rings in the bones of certain dinosaurs served to undermine which of the following claims?

That modern reptiles are related to dinosaurs
That bone growth in dinosaurs was periodic in nature
That dinosaurs were warm-blooded
That dinosaurs had an intermediate type of physiology
That fibro-lamellar bone is the product of a rapid growth rate
----------------------------------------------------------------------
GWD-9-Q36 G-9-Q36:
The author of the passage mentions bone growth patterns in juvenile crocodiles most likely in order to

provide support for the argument that reptiles are not related to dinosaurs
undermine the claim that most reptiles are slow-growing
offer an explanation as to why juvenile crocodiles differ from most modern reptiles
suggest the juvenile crocodiles have a type of physiology intermediate between-f mammals and that of reptiles
suggest that the presence of fibro-lamellar bone does not resolve the debate over dinosaur physiology

cl409454429

顶

cl409454429

求助啊 因为JJ上木有给答案

jzz5034

同顶！

酸菜鱼315

DDCE

cl409454429

DDCE

-- by 会员 酸菜鱼315 (2011/11/5 15:28:25)

谢谢

Maz

这个不是原文啊，注意

cl409454429

这个不是原文啊，注意

-- by 会员 Maz (2011/11/5 16:25:43)

确定嘛？我看说疑似   原文   但没人确认

daisyeni

有多少相似啊?

XYXB

我比对了一下JJ回忆，这篇一定不是原文，充其量背景知识
根本没有提到环境activity因素，除非这个月有2篇恐龙的