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  3. The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists e

The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists e

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问题    The technology of the North American colonies did not differ strikingly from that of Europe, but in one respect, the colonists enjoyed a great advantage. Especially by comparison with Britain, Americans had a wonderfully plentiful supply of wood.
   The first colonists did not, as many people imagine, find an entire continent covered by a continuous forest. Even along the Atlantic seaboard, the forest was broken at many points. Nevertheless, all sorts of fine trees abounded, and through the early colonial period, those who pushed westward encountered new forests. By the end of the colonial era, the price of wood had risen slightly in eastern cities, but wood was still extremely abundant.
   The availability of wood brought advantages that have seldom been appreciated. Wood was a foundation of the economy. Houses and all manner of buildings were made of wood to a degree un known in Britain. Secondly, wood was used as a fuel for heating and cooking. Thirdly, it was used as the source of important industrial compounds, such as potash, an industrial alkali; char coal, a component of gunpowder, and tannic acid, used for tanning leather.
   The supply of wood conferred advantages but had some negative aspects as well. Iron at that time was produced by heating iron ore With charcoal. Because Britain was so stripped of trees, she was unable to exploit her rich iron mines. But the American colonies had both iron ore and wood; iron production was encouraged and became successful. However, when Britain developed coke smelting, the colonies did not follow suit because they had plenty of wood and besides, charcoal iron was stronger than coke iron. Coke smelting led to technological innovations and was linked to the emergence of the Industrial Revolution. In the early nineteenth century, the former colonies lagged behind Britain in industrial development because their supply of wood led them to cling to charcoal iron.
Which of the following is a common assumption about the forests in North America during the colonial period?
选项 A、Their economic value was little known.
B、They contained only a few types of trees.
C、They covered almost the entire continent.
D、They existed only along the Atlantic seaboard.
答案C
解析 细节题。题干意为“下面哪一个是人们对北美森林的普遍臆想?”问句中的关键词assumption是“假设、臆想”的意思，根据文章第二段第一句“...as many people imagine．find an entire continent covered by a continuous forest．”可知他们认为北美被森林覆盖着，故C选项为正确答案。
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