AFtEr thE right timE For lEArning A lAnguAgE hAs pAssED, ______.
A．you CAn only lEArn to writE AnD rEAD it
B．you CAn hArDly lEArn to spEAk it As wEll As A nAtivE
C．you CAnnot DEtECt thE suBtlE DiFFErEnCEs BEtwEEn sounDs
D．you CAnnot work tonguE, throAt, AnD lips to Control BrEAthing