题目内容:
WhydidAndrewCrooksthinkthatthebike-shareprogramwouldbedifficulttoexecute?
A.Inexperiencedridersmightbreakbikingrules. B.Conflictsmightariseamongbikerentalshops.
C.Trafficconditionsmightworseninthedowntownarea.
D.Therearenotenoughlanestoaccommodatethebikes.
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答案解析: