Researchers took a group of teenagers who had never smoked and for one year tracked whether they took up smoking and how their mental health changed. Those who began smoking within a month of the study’s start were four times as likely to be depressed at the study’s end than those who did not begin smoking. Since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers. Which of the following, if true, most strengthen the argument? A. Participants who were depressed at the study’s start were no more likely to be smokers at the study’s end than those who were not depressed. B. Participants who began smoking within a month of the study’s start were no more likely than those who began midway through to have quit smoking by the study’s end. C. Few, if any, of the participants in the study were friends or relatives of other participan D. Some participants entered and emerged from a period of depression within the year of the study. E. The researchers did not track use of alcohol by the teenagers. 答案是A 可是有點轉不過來 期他都很明顯的錯 了CD大家的討論 這題是排除因果倒置 結論； 抽菸----->憂鬱 (A)憂鬱 不導致抽菸 請問這樣哪裡有支持 要不是因為其他錯的更離譜 我也不會選A 可以請教一下 是怎樣推出來的嗎 謝謝 -- (1)問題____ (A)孬(B)奀(C)尖(D)奔 (2) 不離不棄 被當____ (A)盲(B) 臬(C)皂(D)柏 (3) 時機若對 我第一個 ___ (A)加入工會(B)加入大聯盟(C)退休(D)打入WWE (4)╰(‵◇ ′#)╯代表哪個單字(A)good job (b)Come on (c)fuck u (d) shit (5) 監督賞可拿到多少賞金(A)3萬鎂(B)一萬鎂(C)2千NT(D)一萬NT --

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