单项选择题

One should always _____ facts.

A、base one's opinion on
B、base one's opinion in
C、base one opinion on
D、base one opinion in

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判断题

不定值保险的赔偿计算公式是：赔款=保险金额×损失程度，损失程度=(合理市价-残值。()

单项选择题