Smoking, which may be a pleasure for some people, is a serious source of discomfort to their fellows. (1)_____, medical authorit

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问题     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.
    I am (18)_____ asking you to maintain (19)_____ in the auditoriums, classrooms and seminar rooms. This will prove that you have the nonsmokers health and well-being in (20)_____, which is very important to a large number of our students.


选项 A、with
B、for
C、in
D、on

答案B

解析 本题是一道介词搭配题。本题要求填入一个与"concern"相搭配的介词。concern作名词表示"对…的担心,关切"时,与之搭配的介词用"for"。因此,本题的正确答案为for。
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