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[单选题]
设a=log0．56．7，b=log24．3，c=log25．6，则a，b，c的大小关系是（ ）
A
b<c<a
B
a<c<b
C
a<b<c
D
c<b<a
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参考答案
试题答案：
C
答案解释：
根据对数函数的性质：y=logax，当a>1时，y=logax为增函数，且当x>1时，y>0；当0
1时，y<0．据此可知log25．6>log24．3>0，而log0.56．7<0，故c>b>a． 【考点指要】本题考查对数函数的性质，比较对数的大小是成人高考常见题．
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