A.杯把向左,咖啡勺放在盤上遠離杯把 B.杯把向前,咖啡勺放在盤上靠近杯把 C.杯把向后,咖啡勺放在盤上遠離杯把 D.杯把向右,咖啡勺放在盤上靠近杯把
A.3/4 B.1/3 C.2/3或1/2 D.2/3
A.1/3 B.4/5 C.4/9 D.2/5或1/2