语音判断（四选一）
( ) A.girl B.first C.bird D.litter
( ) A.her B.sir C.were D.centre
( ) A.dirty B.birthday C.today D.skirt
( ) A.shirt B.nurse C.her D.yesterday
( ) A.her B.brother C.worker D.sister
( ) A.yesterday B.sir C.September D.ago
( ) A.bird B.winter C.teacher D.summer
( ) A.cleaned B.talked C.looked D.worked
( ) A.showed B.called C.named D.did
( ) A.jumped B.cooked C.liked D.visited