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Directions:forthispart,youareallowed30minutestowriteashortessayonthechallengesoflivinginabigcity.Youshouldwriteatleast120wordsbutnomorethan180words.Nowadays,theglobaltrendofurbanmigrationseemsunstoppable.Formanypeople,thetermbigcityissynonymouswithservices,resourcesandjobopportunities.Buttheyneedtobeawarethaturbanlifeischallengingaswell.Probablythemostdauntingproblemisever-higherhousepricespushedbyagrowingurbanpopulation.Newcomerstoametropolisalwaysfeeldistressedbythenecessityoffindingaffordablehousing.Inaddition,thehustleandbustleofurbanlifeoftencausesphysicalandmentalsuffering,asevidencedbysleepy-eyedcommutersinovercrowdedsubwaytrainsorimpatientcanalsobetortureforbigcitydwellers,whomaygetirritatedwithpoorairquality,trafficnoise,orthemeresightofadensecityscape.Tosumup,foralltheadvantagesoflivinginalargecity,peoplestillhavetoovercomevariouschallengestheyface.