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  3. This was before the steam locomotive, and canal building was at its height. The companies building the canals to transport coal

This was before the steam locomotive, and canal building was at its height. The companies building the canals to transport coal

admin2014-09-29  69
问题     This was before the steam locomotive, and canal building was at its height. The companies building the canals to transport coal needed surveyors to help them find the coal deposits worth mining as well as to determine the best courses for the canals. This job gave Smith an opportunity to study the fresh rock outcrops created by the newly dug canal. He later worked on similar jobs across the length and breadth of England, all the while studying the newly revealed strata and collecting all the fossils he could find. Smith used mail coaches to travel as much as 10,000 miles per year. In 1815 he published the first modern geological map, "A Map of the Strata of England and Wales with a Part of Scotland," a map so meticulously researched that it can still be used today.
Which of the following can be inferred from paragraph 2 about canal building?
选项 A、Canals were built primarily in the south of England rather than in other regions.
B、Canal building decreased after the steam locomotive was invented.
C、Canal building made it difficult to study rock strata which often became damaged in the process.
D、Canal builders hired surveyors like Smith to examine exposed rock strata.
答案B
解析
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