设树T的度为4,其中度为1,2,3,4的结点个数分别为4,2,1,1,则T中的叶子结点数为()。
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A.AsB.AfterC.BeforeD.While
As
B. After
C. Before
D. While
A.insistentB.consistentC.proofD.resistant
A. insistent
B. consistent
C. proof
D. resistant
A.pursuedB.ensuedC.ensuredD.insured
A. pursued
B. ensued
C. ensured
D. insured
A.callB.nameC.takeD.bring
A. call
B. name
C. take
D. bring