No direct relationship has been proven between high cholesterol levels and heart attacks. It can be easier to change our diet a

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问题 No direct relationship has been proven between high cholesterol levels and heart attacks.
It can be easier to change our diet a lot than to change it a little.

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答案Y

解析 题干涉及到了改变多和改变少的比较,从而将答案出处定位到文章第十一段。该段第三句提到 Sometimes... major changes... are easier than minor ones...。题干中的change our diet a lot对应文中的major changes; change it a little 对应minor ones;can对应sometimes,故答案为Y。
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