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    【题目】 As we have seen, the focus of medical care in our society has been __________ from curing diseases to preventing diseases—especially in terms of changing our many unhealthy behaviors.

    A. confirming B. committing

    C. shifting D. concluding

    【答案】C

    【解析】

    试题分析：考查动词辨析。shift“改换，变动；替换”；confirm“确认；证实；批准”；commit“犯罪，做错事”；conclude“推断；作结论”。句意：正如我们所看到，我们医疗保健的焦点正在从治疗疾病转向预防疾病，尤其是就改变我们很多不健康的行为而言。 故选C。

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