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托福阅读句子插入题:Early Saharan Pastoralists

2015-08-24 16:42:51来源:网络

  【托福阅读题型:Early Saharan Pastoralists句子插入题】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句子插入题

  托福阅读句子插入题:Early Saharan Pastoralists

  【Paragraph 3】Smith believes that the hunters were well aware of the more disciplined ways in which their prey behaved. ■Instead of following the cattle on their annual migrations, the hunters began to prevent the herd from moving  from one spot to another. ■At first, they controlled the movement of the herd while ensuring continuance of their meat  diet. ■But soon they also gained genetic control of the animals, which led to rapid physical changes in the herd. ■South African farmers who maintain herds of wild eland (large African antelopes with short, twisted horns) report that the offspring soon diminish in size, unless wild bulls are introduced constantly from outside. The same effects of inbreeding may have occurred in controlled cattle populations, with some additional, and perhaps unrecognized, advantages. The newly domesticated animals behaved better, were easier to control, and may have enjoyed a higher birth rate, which in turn yielded greater milk supplies. We know from rock paintings deep in the Sahara that the herders were soon selectingbreeding animals to produce offspring with different horn shapes and hide colors.(Early Saharan Pastoralists)

  Look at the four squares [■] that indicate where the following sentence could be added to the passage.

  This knowledge enabled the hunters to adopt a different approach to hunting.

  Where would the sentence best fit?

  答案见下一页:

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