No direct relationship has been proven between high cholesterol levels and heart attacks. Boys have a higher risk of developing

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问题 No direct relationship has been proven between high cholesterol levels and heart attacks.
Boys have a higher risk of developing heart disease than girls.

选项 A、Y
B、N
C、NG

答案C

解析 第四段提到It occurs earlier in boys than in girls.说明的是得心脏病的时间,而不是风险哪个更高。题干偷换了原文比较的内容。
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