72. (30176-!-item-!-188;#058&005083)好绕啊~~**** A study followed a group of teenagers who had never smoked and tracked whether they took up smoking and how their mental health changed. After one year, the incidence of depression among those who had taken up smoking was four times as high as it was among those who had not. 事实 Since nicotine in cigarettes changes brain chemistry事实, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers 推论. 事实:抽烟的少年比不抽烟的少年更容易得抑郁,烟里面有一种化学物质 推论:化学物质会影响心情,所以导致了青少年的抑郁 Which of the following, if true, most strengthens the argument? 找支持推论的 A. Participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed. 一年后,那些开始参加的就抑郁的比那些开始就参加但是不抑郁的人要更不容depress. 可是和抽烟有什么关系啊?? B. The study did not distinguish between participants who smoked only occasionally and those who were heavy smokers. C. Few, if any, of the participants in the study were friends or relatives of other participants. 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.
选的是A,大家怎么看?
|