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Archaeologists have long debated what caused the neolithic revolution—the major changes that occurred when large numbers of prehistoric human beings began to give up the nomadic life in favor of settling in villages and farming. One view, the "marginality hypothesis," maintains that early human beings would have lived in regions where the hunting and gathering were best. As populations increased, however, so would competition for resources, leading some people to move to neighboring regions, where domesticating plants and animals would be necessary for survival. Which of the following, if true, would present the most serious challenge to the marginality hypothesis? A. The earliest farmers subsisted on diets that consisted of roughly equal proportions of food gathered through agriculture and hunting-and-gathering activities. B. In the earliest agricultural settlements, the community’s crops were often located many miles away from its members' living quarters. C. Some of the regions that were optimal for hunting-and-gathering activity would not have been optimal for plant and animal domestication. D. Some archaeologists believe that, 3,000 years prior to the advent of agriculture, some humans lived in year-round, permanent settlements but supported themselves by hunting and gathering. E. Evidence suggests that, at the beginning of the neolithic revolution, regions where plant and animal domestication began had optimal conditions for hunting and gathering.
Geneticist: studies suggest that the gene FOXP2, present in humans and many other species, is involved in vocal abilities. The chimpanzee version of FOXP2 differs more from the human version than from the mouse version, even though chimpanzees are far more genetically similar to humans than to mice. This strongly suggests that the differences between the human and chimpanzee versions of FOXP2 account for the development of human language. Which of the following, if true, would most weaken the geneticist's argument? A. The chimpanzee versions of the great majority of genes other than FOXP2 are more similar to the human versions than to the mouse versions. B. The chimpanzee version of FOXP2 differs substantially from the versions in many species with no linguistic ability. C. Some humans with rare versions of FOXP2 have impaired linguistic abilities D. The human version of several other genes know to be involved in vocal abilities are as different from the versions in chimpanzees as is FQXP2. E. In mice, as in humans, FOXP2 is known to be involved in several traits in addition to vocal abilities.
参考答案:ED
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