Where would the sentence best fit?

14. Prose Summary

The practice of settled agriculture in some areas of Asia and Africa was crucial to the development of early

civilizations.

Answer Choices:

A) Prehistorians disagree as to whether early farmers first cultivated crops along floodplains or first tried cultivating crops in less successful environments.

B) Cultivation in fertile river valleys resulted in predictable harvests, which meant that farmers no longer needed to migrate constantly in search of food.

C) Because crops could be cultivated more successfully where farmers were not completely dependent on rainfall, hostilities between groups arose over control of the river systems.

D) The need to organize the effort to ensure the food supply and defend the land led to the formation of elite supervising groups that eventually became the first governments.

E) Increasingly centralized forms of administration resulted in the emergence of social classes and in the

development of cities as trade, administration, or religious centers.

F) Unlike other early civilizations, those that developed in the Indus River Valley did not have any spectacular palaces or areas for exclusive use by the authorities.

托福阅读 TPO33原文 33-1-1 参考答案：

1.A 2.A 3.B 4.AB 5.B 6.D 7.D 8.D 9.A 10.A 11.C 12.C 13.D 14.BDE

托福阅读TPO33原文 33-1-1 答案解析：

第一题，A，词汇题。Culminate .v. 使结束，使达到高潮，使达到顶点。

第二题，A，细节题。定位为原文 “Many prehistorians believe that farming may have emerged independently in several different areas of the world when small communities, driven by increasing population and a decline in available food resources, began to plant seeds in the ground in an effort to guarantee their survival.” 原文说当人口增多，可得到的食物资源下降的时候，就开始种植粮食来维持生计，对应 A“他们用农业来补充其 他食物来源”。

第三题，B，词汇题，undoubtedly，doubted 加上否定前缀 un，表相信，确定，对应 B 选项。

第四题：AB，细节题。定位到原文“The real breakthrough took place when farmers began to cultivate crops along the floodplains of river systems. The advantage was that crops grown in such areas were not as dependent on rainfall and therefore produced a more reliable harvest. An additional benefit was that the sediment carried by the river waters deposited nutrients in the soil, thus enabling the farmer to cultivate a single plot of ground for many years without