23 -- 1:08 App 托福阅读真题第58篇The Most Common Bird on Earth 18 -- 1:30 App 托福阅读真题第57篇Extinction and the Mammoth Steppe 7 -- 1:35 App 托福阅读真题第53篇Sequencing Ice Ages 10 -- 1:32 App 托福阅读真题第52篇Beaks of Darwin' Finches 4 -- 1:22 App 托福阅读真题第...
4.According to the professor, what activities associated with the beginnings of agriculture may have slowed or prevented the onset of a predicted ice age?[Click on two answers.] A. The clearing of trees B. The burning of fossil fuels ...
The Origins of Agriculture At one time, researchers believed there was a clear "wave of advance"of agriculture through Europe between 8,000 and 6,000 years ago. And it may seem easy to explain such a sudden and thorough transition from foraging (depending primarily on wild foods) to agricult...
托福阅读真题第61篇TheOriginsofAgriculture At one time, researchers believed there was a clear "wave of advance"of agriculture through Europe between 8,000 and 6,000 years ago. And it may seem easy to explain such a sudden and thorough transition from foraging (depending primarily on wild foods...
The Origins of Agriculture How did it come about that farming developed independently in a number of world centers (the Southeast Asian mainland, Southwest Asia, Central America, lowland and highland South America, and equatorial Africa) at more or less the same time? Agriculture developed slowly ...
托福考试 复习托福阅读TPO21(试题+答案+译文)第2篇:TheOriginsofAgriculture托福阅读原文【1】Howdiditcomeaboutthatfarmingdevelopedindependentlyinanumberofworldcenters(theSoutheastAsianmainland,SouthwestAsia,CentralAmerica,lowlandandhighlandSouthAmerica,andequatorialAfrica)atmoreorlessthesametime?Agriculturedevelopedslowly...
Changing from hunting and gathering to agriculture had no immediate advantages. To start with, it forced the population to abandon the nomad's life and became sedentary, to develop methods of storage and, often, systems of irrigation. While hunter-gatherers always had the option of moving elsewhe...
explanations First, agriculture did not in fact spread from a single center. Instead, it appeared, apparently independently in many different regions of the world. How can we explain the near-simultaneity of these changes in parts of the world that seem to have had no contact with each other...
然而,二十世纪的研究揭示了这种解释的两个重大问题:第一,农业实际上并不是从一个中心传播的。相反,它显然独立地出现在世界许多不同的地区。我们如何解释这些变化在世界上似乎彼此没有接触的地区几乎同时发生?正如人类学家马克·科恩所强调的,“早期农业最引人注目的事实……正是它是一个如此普遍的事件。其次,我们...
托福阅读句子简化题:The Origins of Agriculture 【Paragraph 3】Climatic changes at the end of the glacial period 13,000 years ago have been proposed to account for the emergence of farming. The temperature increased dramatically in a short period of time (years rather than centuries), allowing for...