单选题
Medibank now offers customers greater ______, allowing them to customize their health insurance policy.
(A) return
(B) flexibility
(C) insight
(D) effect
A
B
C
D
【正确答案】
B
【答案解析】
[词汇] flexibility灵活性，弹性
[错误答案] (A)收益 (C)洞察力 (D)影响，效果
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