TPO69阅读真题+题目+答案下载：Ancient Southwestern Cultures

TPO69阅读真题+题目+答案下载：Ancient Southwestern Cultures

P1.Around 2500 years ago, Amerindian peoples began to live in settled communities in what is now the southwestern United States, growing maize -a crop unique to the New World-together with squash and, later, beans. These cultures developed advanced technologies that allowed them to manipulate their environment and thrive in its arid conditions, though ultimately environmental factors may also have led to their disappearance.

P2.One of these cultures, the Hohokam, practiced irrigation based agriculture.Knowledge of Hohokam irrigation systems is based on archaeological remains found in southern Arizona as well as on extrapolation from technologies currently in use. Because the land was desert with less than 10 inches of rainfall a year, agriculture required catchment dams,irrigation canals, and water conservation. Between A.D. 300 and 900, the Hohokam manipulated the arid environment by building large canals, some as wide as 30 feet across, 7 feet deep, and 8 miles long, that could fertilize as many as 8,000 acres at a time with water from the Salt and Gila river systems. The Hohokam could grow crops and store them throughout the year, producing a continual supply of food. An environmental consequence of irrigated agriculture, however, is that water from the rivers leaches out salts, drawing them up from the subsoil and leaving salinated (salty) topsoils. Just as the Mesopotamian settlements of the Near East were abandoned .。。。。。余下TPO69阅读真题Ancient Southwestern Cultures原文省略！

1. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.

A. The advanced technologies developed by these cultures to cope with the desert environment have since disappeared.

B. These cultures came up with sophisticated ways of adapting to their environments, especially the arid conditions of the desert.

C.Although these cultures became skilled at controlling their arid environment,environmental conditions may have caused their disappearance.

D.Because environmental conditions were so difficult,these cultures eventually abandoned the desert.

2. Why does the author mention that “Mesopotamian settlements of the Near East were abandoned owing to salinization of the land"?

A. To provide a historical analogy that supports a hypothesis about the abandonment of HohoKam villages

B. To contrast the problems caused by Hohokam irrigation with problems in another early culture that used irrigation

C. To imply that wherever it is found, the salinization of soil makes an area uninhabitable

D. To suggest that the fate of the Hohokam villages may help us understand similar events in ancient Mesopotamia

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