关于主题题, evaluate. GWD9-34竟然没有人问过??

amber0919

GWD-9-Q33 to GWD-9-Q36:

Scientists studying the physiology

of dinosaurs have long debated whether

dinosaurs were warm- or cold-blooded.

Line  Those who suspect they were warm-

(5)   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

(10)  their rapid growth rate, warm-blooded

animals, such as birds and mammals,

tend to produce fibro-lamellar bone,

whereas reptiles, which are slowgrowing

and cold-blooded, generally

(15)  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

(20)  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

(25)  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

(30)  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

(35)  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

(40)  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

(45)  that these bones also had growth rings;

however, they were also partially fibrolamellar

in nature. Chinsamy’s work

raises a question central to the debate

over dinosaur physiology: did dino-

(50)  saurs 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

(55)  environmental conditions? (Although

modern reptiles generally do not form

fibro-lamellar bone, juvenile crocodiles

raised under optimal environmental

conditions do.) This question remains

(60)  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

(65) intermediate pattern of bone structure

because their physiology was neither

typically reptilian, mammalian, nor avian.

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

答案为D. 我有点不明白.对于evaluate. 应该是说作者对于某事的评价.  这篇文章有评价吗? 我怎么感觉整篇文章作者就是在叙述不同的观点，并没有加进自己的评价和自己的观点. 黄色加亮部分好象也是叙述事实. 难道理解为作者的观点?  evaluate从何体现?

另:A为什么不对?

类似的有GWD12-10 那篇文章的E选向是错误.就因为并没有作者观点.evaluate不对.

请指教.

amber0919

顶

liuchangming

1,关于EVALUATE: 不必追究单个词，主要看整个D选项表达的意思。

2，文章末尾相当于文章的尾声，不影响整篇文章的主题。

另：

我在新东方上课时老师说，这种主题题可采用三出现原则。大概意思是说细节内容不能出现。A选项出现了Bakker’s argument，属于细节内容，可以排除。