P5: The commercial revolution tended also to spread a particular pattern of exchange. The early commercial centers of the Mediterranean most characteristically offered manufactured goods—purple dye, metal goods, wine, olive oil, and so forth—for the raw materials or the partially processed natural products of other regions. As the commercial revolution spread, this kind of exchange tended to spread with it, with the recently added areas of commerce providing new kinds of raw materials or new sources for familiar products of the natural world, and the longer established commercial centers—which might themselves have lain at the margins of this transformation—producing, or acting as the intermediaries in the transmission of, manufactured commodities.
12. 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. During the commercial revolution, newer centers of trade acted as intermediaries in the exchange of different types of manufactured goods.
B. Longer-established trading centers were familiar with the unprocessed products of the natural world, but depended on other areas as sources for manufactured commodities.
C. Eventually, the commercial revolution led to a trading system whereby newly established commercial centers provided the resources needed for the production of goods while older trading centers produced the goods or assisted in their distribution.
D. The commercial revolution depended on a system of trade where consumers valued novelty in the manufactured goods they acquired, but, at the same time, they wanted to be familiar with the natural products they received.
As the commercial revolution spread, this kind of exchange tended to spread with it, with the recently added areas of commerce providing new kinds of raw materials or new sources for familiar products of the natural world, and the longer established commercial centers—which might themselves have lain at the margins of this transformation—producing, or acting as the intermediaries in the transmission of, manufactured commoditie.
随着商业革命的蔓延，这种交易也随之蔓延，最近增加的商业领域为自然界熟悉的产品提供了新的原材料或新的来源，而历史悠久的商业中心本身也可能拥有处于这一转变的边缘，生产或充当制造商品的中间人。
C选项是对原句的精确改写。newly established commercial centers对应added areas of commerce，assisted in their distribution对应intermediaries ，produced the goods对应manufactured commoditie。
该题有必要去读一遍高亮句之前的句子，原文说早期的商业中心以交换加工品的方式来获取原材料。
随着革命的发生，出现了中间商——新商业中心专门提供原材料。
老商业中心一方面生产加工品，另一方面也充当中间商——时不时协助原材料的分发。
正确答案C。