Read by section-> Identify the main idea and key information.
=> Write a summary of each section in one sentence.
1. Intro (Par. 1-2):
There are underground infrastructure problems in Philadelphia, an old city in the USA.
2. An Underground Mystery:
Because the records of such old underground infrastructures in Philadelphia weren’t kept well, it's hardly predictable what problems could occur and when.
3. Mapping the Depth:
4. OK, Now What?
The cars fell into a sinkhole due to underground structures fails In Philadelphia,.
返信削除fails=> failure
削除Shizuka
返信削除1 Philadelphia’s underground is a complex environment, sometimes sinkhole open up.
a sinkhole opens
削除2They can’t understand detailed structures of underground, so it’s hard to plan new systems.
削除Maruoka
返信削除Philadelphia is one of the oldest city in United States where underground structures are complex.
one of the oldest cities
削除Tamaki
返信削除Philadelphia is one of the important cities in US, and there’re many structures underground such as water pipes and sewers that they sometimes fail.
important=> oldest
削除Nobody knows why underground structures fall in lower Philadelphia.
削除Philadelphia lies a complex and aging infrastructure, which has led to accidents.
返信削除led=> caused
削除Philadelphia is old and important city on the east coast of the US whose underground structures sometimes fails and kill people.
返信削除is an ... city fails and kills
削除Many records of the underground weren't kept, so it is hard to predict where the next sinkhole happens.
削除Philadelphia is one of the oldest city in United States that has complex underground.
返信削除cities underground infrastructure
削除Philadelphia's underground has developed without planning, so the ground could collapse at any time.
返信削除Maruoka
返信削除The city's underground work was never documented in spite of anti-slavery group hid escaped slaves in secret.
In the past, Philadelphia developed underground and it will be sinkholes now.
返信削除The underground of Philadelphia is a mysterious and it was build with no particular order over 300 years.
返信削除