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题库 / Prep2007E1-SC-115
Many population studies have linked a high-salt diet to high rates of hypertension and shown that in societies where they consume little salt, their blood pressure typically does not rise with age.
shown that in societies where they consume little salt, their
shown that in societies that have consumed little salt, their
shown that in societies where little salt is consumed,
they showed that in societies where little salt is consumed,
they showed that in societies where they consume little salt, their
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B. 从句要是一个完整的句子，而B选项shown that in societies that have consumed little salt , their 第一个that只有只有一个名词
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