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【单选题】
P55.下列程序的功能是,将三个数按从大到小进行排序,程序空白处应填写的语句是 If a d=a:a=b:b=d End if If a d=a:a=c:c=d End if If___Then d=b:b=c:c=d End ifA.
b
B.
c
C.
c
D.
b
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