pEoplE wAnt to sEE highEr-lEvEl sports CompEtitions mAinly BECAusE ______.
A．thEy BEComE morE proFEssionAl thAn EvEr
B．thEy rEgArD sports As ConsumEr gooDs
C．thErE Exist FEw worlD-ClAss ChAmpionships
D．sports EvEnts ArE ExCiting AnD stimulAting