Tpo24阅读分析(10)

that farmers were intensifying their efforts during the 1200s. Competition for good farmland may also have prompted people to bond together to assert rights over the best fields.

5. According to paragraph 3, which of the following was one of the consequences of increasing population densities?

○People were increasingly crowded into collections of large housing units.

○People stopped planting crops that have relatively low yields.

○Domestic buildings were pushed beyond the canyon limits.

○The natural landscape was destroyed.

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以density做关键词定位至第二句，说经过若干代人口增长，density实在太大，使得pueblo成为一个不可避免的结果，所以正确答案是A，crowdinto collections of large housing units。B的crop，C的canyon limits和D的destroy原文都没讲

(2)

paragraph3: Population growth is considered a particularly influential push. After several generations of population growth, people packed the landscape in densities so high that communal pueblos may have been a necessary outcome. Around Sand Canyon, for example, populations grew from 5 -12 people per square kilometer in the tenth century to as many as 30 - 50 by the 1200s. As densities increased, domestic architecture became larger, culminating in crowded pueblos. Some scholars expand on this