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GRE阅读模拟练习题(10)

2017-04-26 07:48:22来源：网络

　　为了帮助大家练习GRE阅读题考点，新东方在线GRE频道为大家带来GRE阅读模拟练习题一文，希望对大家GRE备考有所帮助。更多精彩尽请关注新东方在线GRE频道!

　　The researchers characterized episodes of variation in southwestern environments by frequency: low-frequency environmental processes occur in cycles longer than one human generation, which generally is considered to last about 25 years, and high-frequency processes have shorter cycles. The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations. In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly. When the researchers compared sequences of sociocultural change in the Western Pueblo region with episodes of low- and high-frequency environmental variation, however, they found no simple correlation between environmental process and sociocultural change or persistence.

　　Although early Pueblo peoples did protect themselves against environmental risk and uncertainty, they responded variously on different occasions to similar patterns of high-frequency climatic and environmental change. The researchers identified seven major adaptive responses, including increased mobility, relocation of permanent settlements, changes in subsistence foods, and reliance on trade with other groups. These findings suggest that groups’ adaptive choices depended on cultural and social as well as environmental factors and were flexible strategies rather than uncomplicated reactions to environmental change. Environmental conditions mattered, but they were rarely, if ever, sufficient to account for sociocultural persistence and change. Group size and composition, culture, contact with other groups, and individual choices and actions were—barring catastrophes such as floods or earthquakes—more significant for a population’s survival than were climate and environment.

　　It can be inferred from the passage that which of the following activities is NOT an example of a population responding to high-frequency environmental processes?

　　A：Developing watertight jars in which to collect and store water during the rainy season

　　B：Building multistory dwellings in low-lying areas to avoid the flash flooding that occurs each summer

　　C：Moving a village because groundwater levels have changed over the last generation

　　D：Trading with other groups for furs from which to make winter clothes

　　E：Moving one’s herds of grazing animals each year between summer and winter pastures

　　答案：C

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