thE mAin iDEA oF this pAssAgE is thAt ______.
A．BEttEr usE oF grEEnspACE FACilitiEs shoulD BE mADE so As to improvE thE quAlity oF our liFE
B．AttEntion must BE DirECtED to thE improvEmEnt oF rECrEAtivE possiBilitiEs
C．thE urBAn EnvironmEnt is proviDing morE rECrEAtion ACtivitiEs thAn it DiD mAny yEArs Ago
D．priority must BE givEn to thE DEvElopmEnt oF oBligAtory ACtivitiEs