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【单选题】
改革开放以来,我国个人所得税起征点不断调整(见下图)。据此可以推断出 1城乡物价保持稳定 2国家财政支出逐渐减少 3居民可支配收入不断增加 4我国经济发展水平不断提高A.
①②
B.
①④
C.
②③
D.
③④
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