单项选择题
A.2.0%-2.6%B.2.6%-3.3%C.3.5%-3.9%D.4.0%-4.5%
A.1.5%-2.0%B.2.5%-3.5%C.3.6%-3.8%D.4.0%-4.3%
A.0.5%-1.0%B.1.5%-1.8%C.2.0%-2.5%D.2.5%-3.0%
A.1350-1450B.1450-1550C.1550-1600D.1600-1650
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