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Unformatted text preview: igrates first to unexploited areas and chomps the 285
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abundant lowquality stems before moving on. It is a fastin/fastout feeder, relying on a high output of incompletely digested food. By the time the wildebeests (and other ruminants) arrive, the grazing and trampling of the zebras will have worn the vegetation down. As the ruminants then set to work, they eat down to the lower, leafier parts of the vegetation. All of this fits in with the differences in stomach contents with which we began.
4. The word associated in the passage is closest in meaning to ○obvious
5. The author mentions the cow and the horse in paragraph 2 in order to ○distinguish the functioning of their digestive systems from those of East African animals
○emphasize that their relatively large body size leads them to have feeding practices similar to those of East African mammals ○illustrate differences between ruminants and nonruminants through the use of animals likely to be familiar to most readers ○emphasize similarities between the diets of cows and horses and the diets of East African mammals
6. According to paragraph 2, which of the following herbivores has to eat large quantities of plant stems because it gains relatively little energy from each given quantity of this food? ○The gazelle
○ The zebra
○ The topi
7. Paragraph 2 suggests that which of the following is one of the most important factors in determining differences in feeding preferences of East African herbivores? ○The availability of certain foods
○The differences in stomach structure
○The physical nature of vegetation in the environment
○The ability to migrate when food supplies are low
8. According to paragraph 2, all of the following are true of East African gazelles EXCEPT: ○They digest their food very quickly.
○Microorganisms help them digest their food.
○They are unable to digest large food particles unless these are chewed down considerably.
○They survive well even if food supplies are not abundant.
Paragraph 3: The other part of the explanation is body size. Larger animals require more food than smaller animals, but smaller animals have a higher metabolic rate. Smaller animals can therefore live where there is less food, provided that such food is of high energy content. That is why the smallest of the herbivores, Thomson’s gazelle, lives on fruit that is very nutritious but too thin on the ground to support a larger animal. By contrast, the large zebra lives on the masses of lowquality stem material.
9. The phrase provided that in the passage is closest in meaning to
Mail@liuwenyong.com 在在在在在在 www.liuwenyong.com 在在在在在在在在在在在在在在在,在在在在在在在在在在 ○as long as
Paragraph 4: The differences in feeding preferences...
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This note was uploaded on 09/17/2013 for the course LANGUAGE 13DL208 taught by Professor Wang during the Fall '13 term at East China Normal University.
- Fall '13