【单选题】【消耗次数：1】
在消化性溃疡形成中起到关键作用的因素为（）。
①
粘膜血流减少
②
粘膜屏障的完整性
③
胃酸
④
前列腺素E分泌过少
⑤
Hp感染
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消化性溃疡抗Hp的四联疗法正确的是（）。
①
兰索拉唑+阿莫西林+克拉霉素+胶体次碳酸铋
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兰索拉唑+克拉霉素+甲硝唑+硫糖铝
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雷尼替丁+阿莫西林+胶体次碳酸铋+甲硝唑
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奥美拉唑+甲硝唑+阿奇霉素+胶体次碳酸铋
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Appropriate use of the language in social context
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