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 本题的定位词Boys和girls出现在文章第五段第二句,但该句只提到了发病的早晚,即It occurs earlier in boys than in girls,而并没有谈到谁得病的几率更大或风险更高。题干偷换了原文中比较的内容,发病早并不等于得病的风险高,题干内容在文中找不到依据,因此答案为NG。
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