导语：以下英语网为大家整理了全面的职称英语考试历年真题及答案解析，《职称英语考试试题汇总：历年真题及答案解析》供大家参考学习。更多职称英语考试试题敬请关注英语网！
第6部分：完形填空（第51-65题，每题1分，共15分）
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
Smoking Can Increase Depressive Symptoms in Teens
While some teenagers may puff on cigarettes to self-medicate against the blues, scientists at the University of Toronto1 and the University of Montreal have found that smoking may actually (51) depressive symptoms in some teens.
This observational study is one of the few to examine the perceived (52) benefits of smoking among teens, says lead researcher Michael Chaiton, a research associate at the Ontario Tobacco Research Unit of the University of Toronto. (53) cigarettes may appear to have self-medicating effects or to improve mood, in the long 54 we found that teens who started to smoke reported5 higher depressive symptoms.
As part of the study，some 662 high school teenagers completed up to 20 questionnaires about their use of cigarettes to (55) mood．Secondary schools were selected to provide a mix of French and English participants, urban and rural schools, and schools 56 in high, moderate and low socioeconomic neighbourhoods6．
Participants were divided into three (57): never smokers; smokers who did not use cigarettes to self-medicate, improve mood or physical (58); smokers who used cigarettes to self-medicate. Depressive symptoms were measured using a scale that asked how felt too fired to do things: had (59) going to sleep or staying asleep; felt unhappy，sad. or depressed; felt hopeless about the future；felt vexed, antsy or tense; and worried too much about things.
Smokers who used cigarettes as mood (60) had higher risks of elevated depressive symptoms (61)teens who had never smoked, says co-researcher Jennifer 0Loughlin，a professor at the University of Montreal Department of Social and Preventive Medicine．0ur study found that teen smokers who reported emotional benefits from smoking are (62) higher risk of depressive symptoms.
The (63) between depression and smoking exists (64) among teens that use cigarettes to feel better. Its (65) to emphasize that depressive symptom scores8 were higher among teenagers who reported emotional benefits from smoking after they began to smoke, says Dr. Chaiton．
51．A diagnose B increase C examine D treat
52．A financial B material C emotional D political
53．A Whatever B Although C Since D If
54．A road B term C journey D distance
55．A affect B judge C lead D study
56．A located B moved C exposed D mixed
57．A groups B sets C species D versions
58．A beauty B state C world D activity
59．A time B courage C trouble D energy
60．A tellers B improvers C creators D designers
61．A not B than C but D that
62．A at B in C about D without
63．A association B cooperation C difference D agreement
64．A probably B principally C occasionally D scarcely
65．A important B meaningless C illogical D friendly