LESSON 06 Why Sinkholes Open Up
영어1 시사 한상호 교과서 6과 본문 음원 자료입니다.
Generally speaking, naturally occurring sinkholes cannot be prevented.
However, if you live in an area where sinkholes have happened before, look around for possible warnings, such as leaning trees, doors or windows that don’t close properly, or rainwater collecting in unusual spots.
Sinkholes caused by human carelessness can often be prevented.
Thorough soil testing prior to construction and maintaining the underground water and plumbing systems are the best ways to prevent the formation of a sinkhole in the middle of a city.
Sinkholes are not widespread events like hurricanes or earthquakes.
They are very localized.
However, this does not mean that we should ignore the possibility of sinkholes.
As our population grows and land development continues, we seem to be seeing more sinkholes and more stories about humans being affected by them.
If we look for ways to detect and prevent sinkholes, it may be easier to rescue another Jeff from a sinkhole somewhere else in the world.
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