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  3. Which of the following is the main topic of the passage? What is the major reason why some doctors give patients potassium chlo

Which of the following is the main topic of the passage? What is the major reason why some doctors give patients potassium chlo

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问题 Which of the following is the main topic of the passage?
What is the major reason why some doctors give patients potassium chloride?
选项 A、It is used as medicine.
B、It contains no sodium.
C、It makes food tasty.
D、Human body can easily absorb potassium chloride.
答案C
解析 细节题。参见最后一段第二句：So some physicians prescribe as a replacement seasoning potassium chloride，which tastes salty but contains no sodium．(因此一些医生建议病人用氯化钾充当替代调味剂，氯化钾有咸味但不含钠。)本题问医生建议病人食用氯化钾的主要原因，而选项B(不含钠)并非主要原因。
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大学英语四级

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