"Genetic tests to detect those glitches in people can allow them to reduce ", here "them" (Sentence 2, Paragraph 3) refers to ______.

【参考答案】

people[分析] 解词题。根据上下文此句意为对人的基因错误的测试，可以帮助人通过改变生活方式或服用预防性药物降低发病......

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