填空题
Smoking, which may be a pleasure for some people, is a serious source of discomfort for their fellows. Medical authorities express their 【B1】 about the effect of smoking on the health not only 【B2】 those who smoke but also of those who do not. In fact, nonsmokers who must involuntarily inhale the air polluted by the tobacco smoke may 【B3】 more than the smokers themselves.
As you are doubtless aware, a considerable number of our students have 【B4】 an effort to 【B5】 the university to ban smoking in the classrooms. I believe they are entirely right in their aim. 【B6】 .I would hope that it is possible to achieve this by 【B7】 on the smokers to use good judgment and show concern for others rather than 【B8】 regulation.
Smoking is prohibited by city laws in theaters and in halls used for showing films as well as in laboratories 【B9】 there may be a fire hazard. Elsewhere, it is up to your good sense.
I am therefore asking you to maintain "No Smoking" in the auditoriums and classrooms. This will prove that you have to keep nonsmokers'' health and well-being 【B10】 . which is very important to a large number of our students.
【正确答案】
A
【答案解析】该空应填入一个可以与about连用的名词。根据上下文，concern在词义上最为合适，而且concern about sth.／sb.意思是“对某事或某人的担心”。这句话的意思是说“吸烟影响了吸烟者本人及不吸烟者的健康，医学界权威对此表示担心”。
【正确答案】
D
【答案解析】not only…but also应该连接两个并列成分，既然后面出现了of those who do not，那么前面应该是of those who smoke，意思是吸烟既影响了吸烟者的健康，又影响了不吸烟者的健康。
【正确答案】
B
【答案解析】四个选项词义都很相近，又有所不同，endure为“忍耐”，suffer为“遭受痛苦，受损害”，undergo为“经历，经受不愉快的或痛苦的事物”，put up with为“忍受或容忍”。根据上下文suffer一词最为合适。该句意思是“事实上，与吸烟者相比，那些被迫吸入受到香烟污染的空气的不吸烟者将遭受更多的痛苦”。
【正确答案】
C
【答案解析】join意思是“成为……的一员”，join in sth．意思是“加入某活动中，一起做某事”，从上下文的意思看，C项join in更为合适。本题的四个选项提示考生应填一个动词，direct sb．to do sth．为“指示，命令某人做某事”，而directs sb．to do sth．放在文中不仅意思不对，而且用法也不对，因此B项是错的。directs sb．at sth．为“使……转向或对准某一方向”，而D项中direct与at连在一起，中间没有宾语，也是在意思及用法上均不对。
【答案解析】四个选项都是动名词，都可以做介词by的宾语。call on sb to do．sth．意为“恳求或促使某人做某事”，plead with sb．for sth．意为“再三恳求或请求某人做某事”，beg sb. for sth．意为“祈求某人做某事”，insist on sth.／doing sth．意为“坚决主张(或做)某事”。由此看来，选项D意思与上下文相符，而且只有call一词在用法上符合原文。
【正确答案】
B
【答案解析】rather than前后通常连接两个并列成分。从上下文意思看，by calling on the smokers to use good judgement and show concern for others与rather than后面的成分是并列的，因此，此处应该填入介词by。