Smoking, which may be a pleasure for some people, is a seruious source of discomfort for their fellows.【C1】______, medical autho

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问题     Smoking, which may be a pleasure for some people, is a seruious source of discomfort for their fellows.【C1】______, medical authorities express their【C2】______about the effect of smoking【C3】______the health not only of those who smoke but also of those who don’t. In fact, non-smokers who must【C4】______inhale the air polluted by tobacco smoke may【C5】______more than the smokers themselves.
    A【C6】______number of our students have【C7】______in an effort to【C8】______the university to ban smoking in the classrooms. I believe they are【C9】______right in their aim.【C10】______, I would hope that it is【C11】______to achieve this by【C12】______the smokers to use good judgment and show concern【C13】______others rather than by regulation.
    I am therefore asking you to【C14】______"No Smoking" in the auditoriums, classrooms and seminar rooms. This will prove that you have the non-smoker’s health and well-being【C15】______, which is very important to a large number of our students.
【C3】

选项 A、on
B、in
C、with
D、to

答案A

解析 固定搭配。effect on表示“对……的作用”。故答案为A。
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