单选题
The forms of advertising mentioned in the first paragraph would have least impact ______.
A、
in the rush hours
B、
during working hours
C、
before working hours
D、
after working hours
【正确答案】
B
【答案解析】
第一段说的广告方式television，radio loudspeakers，newspaper，escalator。和 roadside billboards在工作时间不太可能影响人们，但是其他时间人们都会接触到。
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