题目内容:
WhydoesthespeakercitetheexampleofgraffitiintheLondonunderground?
A.Toshowthatmindlessgraffiticanprovokeviolenc B.ToshowthatLondonershayeaspeciallikingforgraffit
C.Toshowthatgraffiti,insomecases,canconstituteacrim
D.Toshowthatgraffiticanmaketheenvironmentmorecolorfu
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