Paragraph 2: 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 10000 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”, map so meticulously researched
that it can still be used today．
3. Which of the following can be inferred from paragraph 2 about canal
building?
○Canals were built primarily in the south of England rather than in other
regions．
○Canal building decreased after the steam locomotive was invented．
○Canal building made it difficult to study rock strata which often became
damaged in the process．
○Canal builders hired surveyors like Smith to examine exposed rock strata．
想請問為什麼答案是二不是四?
就二來看，文章只說是這是在locomotive 出現前，運河建築還是在高峰的時候
可是沒有說之後就衰退了啊~"~
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