皮皮学，免费搜题
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【单选题】
借助纳米技术,药物可以克服人体的生物屏障,通过人为操控直接到达病灶区,在提高局部药物浓度,增强治疗效果的同时减少了对其他组织的损害。这表明 1任何事物之间都有着这样或那样的联系 2要善于分析和把握事物存在和发展的条件 3人能根据事物固有的联系建立新的联系 4人能突破客观规律的限制发挥主观能动性
A.
①②
B.
①④
C.
②③
D.
③④
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