wealthy people with the business tax instead of the individual income tax weakens governm

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A. Taxing, closing
(答案→)B. Taxing, to close
C. Tax, to close
D. Having taxed, closing
解析：考查动名词做主语和不定式用法。本题第一空的Taxing wealthy people with the business tax instead of the individual ine tax在句中做主语。第二空的不定式to close the wealth gap是对名词efforts的修饰限定。句意：征收富人的商业税而不是个人所得税削弱了政府减少贫富差距的努力。故B正确。