题目内容

Given a，b，c satisfy c＜b＜a and ac＜0，then which one is not sure to be correct in the following inequalities？（　　）
（英汉词典：besureto确定；correct正确的；inequality不等式）

A．

b

a

＞

c

a

B．

b-a

c

＞0

C．

b2

c

＞

a2

c

D．

a-c

ac

＜0

试题答案

C

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