As the animals decayed, more scavengers would be attracted and caught intheir turn. Carnivores greatly outnumber herbivores in the collection: for everylarge herbivore, there is one saber-tooth cat, a coyote, and four wolves. Thefact that some bones are heavily weathered shows that some bodies remained abovethe surface for weeks or months. Bacteria in the asphalt would have consumedsome of the tissues other than bones, and the asphalt itself would dissolve whatwas left, at the same time impregnating and beautifully preserving the saturatedbones, rendering them dark brown and shiny.
1. What aspect of the La Brea tar pits does the passage mainly discuss?
(A) The amount of asphalt that was mined there
(B) The chemical and biological interactions between asphalt andanimals
(C) The fossil remains that have been found there
(D) Scientific methods of determining the age of tar pits
2. In using the phrase the heart of Los Angeles in line 2, the author istalking about the city's
(A) beautiful design
(B) central area
(C) basic needs
(D) supplies of natural asphalt
3. The word noticed in line 5 closest in meaning to
(A) predicted
(B) announced
(C) corrected
(D) observed
4. The word tangled in line 10 is closest in meaning to
(A) buried beneath
(B) twisted together
(C) quickly formed
(D) easily dated
5. The word them in line 13 refers to
(A) insects
(B) birds
(C) cloths
(D) proboscideans
6. How many proboscideans have been found at the La Brea tar pits?
(A) 9
(B) 17
(C) 1.5 million
(D) 2.5 million
7. The word concealed in line 17 is closest in meaning to
(A) highlighted
(B) covered
(C) transformed
(D) contaminated
8. Why does the author mention animals such as coyotes and wolves inparagraph 4?
(A) To give examples of animals that are classified as carnivores
(B) To specify the animals found least commonly at La Brea
(C) To argue that these animals were especially likely to avoidextinction.
(D) To define the term scavengers

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标题：TOEFL阅读理解|托福阅读真题整合( 三 )