补充材料的第四篇两道题目不知道在文章哪里.

inlovesummer

 题目在底下,可不可以用红色帮我表出答案在文中哪里可以找到呢? 谢谢

Passage 4

     The fossil remains of the first flying vertebrates, the

   pterosaurs, have intrigued paleontologists for more

than two centuries. How such large creatures, which

  weighed in some cases as much as a piloted hang-glider
            

(5) and had wingspans from 8 to 12 meters, solved the

problems of powered flight, and exactly what these

creatures were--reptiles or birds-are among the ques-

tions scientists have puzzled over.

  Perhaps the least controversial assertion about the

(10) pterosaurs is that they were reptiles. Their skulls,

pelvises, and hind feet are reptilian. The anatomy of

their wings suggests that they did not evolve into the

class of birds. In pterosaurs a greatly elongated fourth

finger of each forelimb supported a winglike membrane.

(15)
                The other fingers were short and reptilian, with sharp

claws. In birds the second finger is the principal strut

of the wing, which consists primarily of feathers(If the

pterosaurs walked on all fours, the three short fingers

may have been employed for grasping. When a

(20) pterosaur walked or remained stationary, the fourth

finger, and with it the wing, could only turn upward in

an extended inverted V-shape along each side of the animal’s body.

   The pterosaurs resembled both birds and bats in

(25) their overall structure and proportions. This is not sur-

prising because the design of any flying vertebrate is

subject to aerodynamic constraints. Both the pterosaurs

and the birds have hollow bones, a feature that repre-

sents a savings in weight. In the birds, however, these

(30)
                bones are reinforced more massively by internal struts.

  Although scales typically cover reptiles, the

pterosaurs probably had hairy coats. T.H. Huxley rea-

soned that flying vertebrates must have been warm-

blooded because flying implies a high rate of

(35) metabolism, which in turn implies a high internal tem-

perature. Huxley speculated that a coat of hair would

insulate against loss of body heat and might streamline

the body to reduce drag in flight. The recent discovery

of a pterosaur specimen covered in long, dense, and

(40) relatively thick hairlike fossil material was the first clear

evidence that his reasoning was correct.

   Efforts to explain how the pterosaurs became air-

borne have led to suggestions that they launched them-

selves by jumping from cliffs, by dropping from trees.

(45) or even by rising into light winds from the crests of

waves. Each hypothesis has its difficulties. The first

wrongly assumes that the pterosaurs’ hind feet rese-

mbled a bat’s and could serve as hooks by which the

animal could hang in preparation for flight. The second

(50)
                hypothesis seems unlikely because large pterosaurs

could not have landed in trees without damaging their

wings. The third calls for high waves to channel

updrafts. The wind that made such waves however,

might have been too strong for the pterosaurs to

(55)
                control their flight once airborne.

 

7. It can be inferred from the passage that some

  scientists believe that pterosaurs (A)

  (A) lived near large bodies of water

  (B) had sharp teeth for tearing food

  (C) were attacked and eaten by larger reptiles

  (D) had longer tails than many birds
  (E) consumed twice their weight daily to maintain

     their body temperature

3. According to the passage, the skeleton of a

  pterosaur can be distinguished from that of a bird by

  the (C)

 (A) size of its wingspan

 (B) presence of hollow spaces in its bones

 (C) anatomic origin of its wing strut

 (D) presence of hooklike projections on its hind feet

 (E) location of the shoulder joint joining the wing to its

body

7. It can be inferred from the passage that some

  scientists believe that pterosaurs (A)

  (A) lived near large bodies of water

  (B) had sharp teeth for tearing food

  (C) were attacked and eaten by larger reptiles

  (D) had longer tails than many birds
  (E) consumed twice their weight daily to maintain

     their body temperature

3. According to the passage, the skeleton of a

  pterosaur can be distinguished from that of a bird by

  the (C)

 (A) size of its wingspan

 (B) presence of hollow spaces in its bones

 (C) anatomic origin of its wing strut

 (D) presence of hooklike projections on its hind feet

 (E) location of the shoulder joint joining the wing to its

body

sen4sun

http://forum.chasedream.com/dispbbs.asp?boardID=25&ID=87759&page=1

In pterosaurs a greatly elongated fourth

finger of each forelimb supported a winglike membrane.

(15)
                The other fingers were short and reptilian, with sharp

claws. In birds the second finger is the principal strut

of the wing

inlovesummer

谢谢, 第7题明白啦, 看得太不仔细,没有想WAVE的含义.

可是对第三题还有疑问: 文中是说鸟有WING　STRUT. 但是没有说它有啊.题目问的是它的可以与鸟区别的特征啊.

sen4sun

The anatomy of

their wings suggests that they did not evolve into the

class of birds.

inlovesummer

对啦对啦, 其实生词还蛮影响的.读的时候我不明白STRUT是支撑点的意思.我一直在找选项说明它们有不同FINGER支持翅膀的. 唉, 这要是在考试真是会急死人.

不知道大家是怎么解决这个问题的.

inlovesummer

忘了和楼上的说谢谢.....楼上的你什么时候考啊, 你真的很强啊.