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- 2012-10-13
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Since the mayor’s publicity campaign for Greenville’s bus service began six months ago, morning automobile traffi c into the midtown area of the city has decreased 7 percent. During the same period, there has been an equivalent rise in the number of persons riding buses into the midtown area. Obviously, the mayor’s publicity campaign has convinced many people to leave their cars at home and ride the bus to work. Which of the following, if true, casts the most serious doubt on the conclusion drawn above? (A) Fares for all bus routes in Greenville have risen an average of 5 percent during the past six months. (B) The mayor of Greenville rides the bus to City Hall in the city’s midtown area. (C) Road reconstruction has greatly reduced the number of lanes available to commuters in major streets leading to the midtown area during the past six months. (D) The number of buses entering the midtown area of Greenville during the morning hours is exactly the same now as it was one year ago. (E) Surveys show that longtime bus riders are no more satisfi ed with the Greenville bus service than they were before the mayor’s publicity campaign began.
你说这个题吧 题里说campaign是半年以前的。问题主要针对是否因为campaign才有了后来的改变。 一年前---------六个月前:campaign----------现在 D说现在bus的量和一年前一样。。。 所以这样的话,改变与campaign无关。 |
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