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SAT阅读话题分类——生物环境

作者:新通教育

2016-02-19 新通教育

SAT阅读一直是中国考生的薄弱项,新通教育为帮助广大考生提高SAT考试成绩,特地精心整理了SAT阅读分类题库。那快来SAT阅读高分素材库汲取营养吧!

      That large animals require a luxuriant vegetation, has
  been a general assumption which has passed from
  one work to another; but I do not hesitate to say that
  it is completely false, and that it has vitiated the
  5 reasoning of geologists on some points of great
  interest in the ancient history of the world. The
  prejudice has probably been derived from India, and
  the Indian islands, where troops of elephants, noble
  forests, and impenetrable jungles, are associated
  10 together in every one's mind. If, however, we refer to
  any work of travels through the southern parts of
  Africa, we shall find allusions in almost every page
  either to the desert character of the country, or to the
  numbers of large animals inhabiting it. The same
  15 thing is rendered evident by the many engravings
  which have been published of various parts of the
  interior.
  Dr. Andrew Smith, who has lately succeeded in
  passing the Tropic of Capricorn, informs me that,
  20 taking into consideration the whole of the southern
  part of Africa, there can be no doubt of its being a
  sterile country. On the southern coasts there are some
  fine forests, but with these exceptions, the traveller
  may pass for days together through open plains,
  25 covered by a poor and scanty vegetation. Now, if we
  look to the animals inhabiting these wide plains, we
  shall find their numbers extraordinarily great, and
  their bulk immense. We must enumerate the elephant,
  three species of rhinoceros, the hippopotamus, the
  30 giraffe, the bos caffer, two zebras, two gnus, and
  several antelopes even larger than these latter
  animals. It may be supposed that although the species
  are numerous, the individuals of each kind are few.
  By the kindness of Dr. Smith, I am enabled to show
  35 that the case is very different. He informs me, that in
  lat. 24', in one day's march with the bullock-wagons,
  he saw, without wandering to any great distance on
  either side, between one hundred and one hundred
  and fifty rhinoceroses - the same day he saw several
  40 herds of giraffes, amounting together to nearly a
  hundred. At the distance of a little more than one
  hour's march from their place of encampment on the
  previous night, his party actually killed at one spot
  eight hippopotamuses, and saw many more. In this
  45 same river there were likewise crocodiles. Of course
  it was a case quite extraordinary, to see so many great
  animals crowded together, but it evidently proves that
  they must exist in great numbers. Dr. Smith describes
  the country passed through that day, as 'being thinly
  50 covered with grass, and bushes about four feet high,
  and still more thinly with mimosa-trees.'
  Besides these large animals, every one the least
  acquainted with the natural history of the Cape, has
  read of the herds of antelopes, which can be
  55 compared only with the flocks of migratory birds.
  The numbers indeed of the lion, panther, and hyena,
  and the multitude of birds of prey, plainly speak of
  the abundance of the smaller quadrupeds: one
  evening seven lions were counted at the same time
  60 prowling round Dr. Smith's encampment. As this able
  naturalist remarked to me, the carnage each day in
  Southern Africa must indeed he terrific! I confess it is
  truly surprising how such a number of animals can
  find support in a country producing so little food. The
  65 larger quadrupeds no doubt roam over wide tracts in
  search of it; and their food chiefly consists of
  underwood, which probably contains much nutriment
  in a small bulk. Dr. Smith also informs me that the
  vegetation has a rapid growth; no sooner is a part
  70 consumed, than its place is supplied by a fresh stock.
  There can be no doubt, however, that our ideas
  respecting the apparent amount of food necessary for
  the support of large quadrupeds are much
  exaggerated.
  75 The belief that where large quadrupeds exist, the
  vegetation must necessarily be luxuriant, is the more
  remarkable, because the converse is far from true. Mr.
  Burchell observed to me that when entering Brazil,
  nothing struck him more forcibly than the splendour of
  80 the South American vegetation contrasted with that of
  South Africa, together with the absence of all large
  quadrupeds. In his Travels, he has suggested that the
  comparison of the respective weights (if there were
  sufficient data) of an equal number of the largest
  85 herbivorous quadrupeds of each country would be
  extremely curious. If we take on the one side, the
  elephants hippopotamus, giraffe, bos caffer, elan,five
  species of rhinoceros; and on the American side, two
  tapirs, the guanaco, three deer, the vicuna, peccari,
  90 capybara (after which we must choose from the
  monkeys to complete the number), and then place
  these two groups alongside each other it is not easy to
  conceive ranks more disproportionate in size. After the
  above facts, we are compelled to conclude, against
  95 anterior probability, that among the mammalia there
  exists no close relation between the bulk of the
  species, and the quantity of the vegetation, in the
  countries which they inhabit.

1. The author is primarily concerned with
  A. discussing the relationship between the size of mammals and the nature of vegetation in their habitats
  B. contrasting ecological conditions in India and Africa
  C. proving the large animals do not require much food
  D. describing the size of animals in various parts of the world
  E. explaining that the reasoning of some geologists is completely false

  2. The word ‘vitiated’ (line 4) most nearly means
  A. infiltrated
  B. occupied
  C. impaired
  D. invigorated
  E. strengthened

  3. According to the author, the ‘prejudice’ (line 7) has lead to
  A. errors in the reasoning of biologists
  B. false ideas about animals in Africa
  C. incorrect assumptions on the part of geologists
  D. doubt in the mind of the author
  E. confusion in natural history

  4. The author uses information provided by Dr. Smith to
  I supply information on quality and quantity of plant life in South Africa
  II indicate the presence of large numbers of animals
  III give evidence of numbers of carnivorous animals
  A. I only
  B. II only
  C. III only
  D. I and II only
  E. I, II and III

  5. The flocks of migratory birds (line 55)are mentioned to
  A. describe an aspect of the fauna of South Africa
  B. illustrate a possible source of food for large carnivores
  C. contrast with the habits of the antelope
  D. suggest the size of antelope herds
  E. indicate the abundance of wildlife

  6. The ‘carnage’ (line 61) refers to the
  A. number of animals killed by hunters
  B. number of prey animals killed by predators
  C. number of people killed by lions
  D. amount of food eaten by all species
  E. damage caused by large animals

  7. To account for the ‘surprising’ (line 63) number of animals in a ‘country producing so little food’ (line 64), Darwin suggests all of the following as partial explanations except
  A. food which is a concentrated source of nutrients
  B. rapid regrowth of plant material
  C. large area for animals to forage in
  D. mainly carnivorous animals
  E. food requirements have been overestimated

  8. The author makes his point by reference to all of the following except
  A. travel books
  B. published illustrations
  C. private communications
  D. recorded observations
  E. historical documents

  9. Darwin quotes Burchell’s observations in order to
  A. counter a popular misconception
  B. describe a region of great splendor
  C. prove a hypothesis
  D. illustrate a well-known phenomenon
  E. account for a curious situation

  10. Darwin apparently regards Dr. Smith as
  A. reliable and imaginative
  B. intrepid and competent
  C. observant and excitable
  D. foolhardy and tiresome
  E. incontrovertible and peerless

  11. Darwin’s parenthetical remark (line 83-84) indicates that
  A. Burchell’s data are not reliable
  B. Burchell’s ideas are not to be given much weight
  C. comparison of the weights of herbivores is largely speculative
  D. Darwin’s views differ from Burchell’s
  E. more figures are needed before any comparison can be attempted

  12. Anterior probability (line 95) refers to
  A. what might have been expected
  B. ideas of earlier explorers
  C. likelihood based on data from India
  D. hypotheses of other scientists
  E. former information

  

 

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