课程咨询

托福考试网 托福资料下载 托福资讯 0元讲座 水平测试

托福考试练习
新东方在线 > TOEFL > 托福阅读 > 正文
托福培训

扫码免费领资料

托福全科备考资料

免费水平测试及规划

托福培训

扫码关注掌握一手留学资讯

回复XDF免费水平测试

录播精讲 直播课HOT

托福阅读修辞目的题：Feeding Habits

2015-08-17 15:58:45来源：网络

　　【托福阅读题型：Feeding Habits修辞目的题】托福阅读中句子插入题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

　　查看全部：托福阅读题型分类练习之修辞目的题

　　托福阅读修辞目的题：Feeding Habits

　　【Paragraph 2】How are we to understand their different feeding preferences? The answer lies in two associated　differences among the species, in their digestive systems and body sizes. According to their digestive systems, these　herbivores can be divided into two categories: the nonruminants (such as the zebra, which has a digestive system like a　horse) and the ruminants (such as the wildebeest, topi, and gazelle, which are like the cow). Nonruminants cannot　extract much energy from the hard parts of a plant; however, this is more than made up for by the fast speed at which　food passes through their guts. Thus, when there is only a short supply of poor-quality food, the wildebeest, topi, and　　gazelle enjoy an advantage. They are ruminants and have a special structure (the rumen) in their stomachs, which　contains microorganisms that can break down the hard parts of plants. Food passes only slowly through the ruminant’s　　gut because ruminating—digesting the hard parts—takes time. The ruminant continually regurgitates food from its　stomach back to its mouth to chew it up further (that is what a cow is doing when “chewing cud”). Only when it has been　chewed up and digested almost to a liquid can the food pass through the rumen and on through the gut. Larger particles　cannot pass through until they have been chewed down to size. Therefore, when food is in short supply, a ruminant can　last longer than a nonruminant because it can derive more energy out of the same food. The difference can partially　explain the eating habits of the Serengeti herbivores. The zebra chooses areas where there is more low-quality food. It　migrates first to unexploited areas and chomps the abundant low-quality stems before moving on. It is a fast-in/fast-out　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.(Feeding Habits of East African Herbivores)

　　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

　　答案见下一页：

本文关键字: 托福阅读题型 托福阅读训练 修辞目的题

上一页 1 2 下一页

托福辅导

关注新东方在线托福

托福机经·Official题目练习

考前重点突破·听说读写海量资料

更多资料

关注新东方在线托福，
回复【XDF】获取大礼包

托福辅导
  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【添加】，回复对应关键字领取学习资料。
更多>>
更多内容

免费获取托福备考大礼包

微信扫描下方二维码 立即领取

托福辅导
更多>>
更多公益讲座>>
更多>>
更多资料
托福TPO 托福听力练习 托福口语练习 托福阅读练习 托福写作练习
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10