请教OG-10-115排除错误选项的思路

moveon

115. Many people argue that tobacco advertising plays a crucial role in causing teen-agers to start or continue smoking. In Norway, however, where there has been a ban on tobacco advertising since 1975, smoking is at least as prevalent among teen-agers as it is in countries that do not ban such advertising.

Which of the following statements draws the most reliable conclusion from the information above?

(A) Tobacco advertising cannot be the only factor that affects the prevalence of smoking among teen-agers.

(B) Advertising does not play a role in causing teen-agers to start or continue smoking.

(C) Banning tobacco advertising does not reduce the consumption of tobacco.

(D) More teen-agers smoke if they are not exposed to tobacco advertising than if they are.
    A

(E) Most teen-agers who smoked in 1975 did not stop when the ban on tobacco advertising was implemented.

答案是A, 我选了D. OG没解释我还是不理解。请问我以下的思路错在哪里？

原文：禁烟广告能减少青少年吸烟，挪威有禁烟广告，但挪威青少年吸烟跟其他国家至少一样普及。问结论。

我的结论：如果挪威没有禁烟广告，挪威青少年吸烟会更多！

[此贴子已经被作者于2008-4-10 23:47:47编辑过]

Colx

原文：禁烟广告能减少青少年吸烟？？？

原文没有这样的含义，再仔细读读题

moveon

天哪！我读题都那么主观臆断！

谢谢Colx!!