Smoking, which may be a pleasure for some people, is a serious source of discomfort for their fellows. (21) ,medical authorities express their concern about the effect of smoking (22) the health not only of those who smoke but also of those who do not. In fact, non-smokers who must involuntarily inhale (吸入) the air (23) by tobacco smoke may suffer more than the smokers (24) .
Smoking is prohibited in the theatres and in the halls used for showing films (25) in laboratories (26) there may be a fire hazard (危险). Elsewhere, it is up to your good (27) .
I am (28) asking you to maintain "No-Smoking" in classrooms and seminar rooms. This will prove that you have the (29) health in mind, which is very important to a large (30) of our students.
Smoking, which may be a pleasure for some people, is a serious source of discomfort to their fellows. (1) , medical authorities ex press their (2) about the effect of smoking (3) the health not only (4) those who smoke but also of those who do not. In fact, non smokers who must (5) inhale the air polluted by tobacco smoke may (6) more than the .smokers themselves.
As you aye doubtless , (7) , a considerable number of our students have (8) in effort to (9) the university to ban smoking in the classroom. I believe they are (10) right in their aim. (11) I would hope that it is (12) to achieve this by (13) on the smokers to use good judgment and show concern (14) others rather than regulation. Smoking is (15) by law in theater and in halls used for (16) films as well as in laboratories where there (17) be a fire hazard. Elsewhere, it is up to your good sense.
A. linked
B. connected
C. associated
D. joined
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