2. 外语
  3. In the past most airline companies minimized aircraft weight to minimize fuel costs. The safest airline seats were heavy, and ai

In the past most airline companies minimized aircraft weight to minimize fuel costs. The safest airline seats were heavy, and ai

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问题 In the past most airline companies minimized aircraft weight to minimize fuel costs. The safest airline seats were heavy, and airlines equipped their planes with few of these seats. This year the seat that has sold best to airlines has been the safest one-—a clear indication that airlines are assigning a higher priority to safe seating than to minimizing fuel costs. Which of the following, if true, most seriously weakens the argument above?
选项 A、Last year’s best-selling airline seat was not the safest airline seat on the market.
B、No airline company has announced that it would be making safe seating a higher priority this year.
C、The price of fuel was higher this year than it had been in most of the years when the safest airline seats sold poorly.
D、Because of increases in the cost of materials, all airline seats were more expensive to manufacture this year than in any previous year.
E、Because of technological innovations, the safest airline seat on the market this year weighed less than most other airline seats on the market.
答案E
解析 本题论点是“航空公司把安全放在了比最小化燃料成本更高的优先位置上”，而论据是“向航空公司销售最好的是最安全的”。上述论点的成立要依赖于一个假设：“过去最安全的座位很重，现在最安全的座位也很重”。如果由于技术上的创新，今年市场上最安全的客机座位比市场上其他客机座位要轻，正如(E)所说，那么上述论点成立所依赖的假设必将错误，所以削弱了上述论断，所以(E)正确；(A)只表明去年最好卖的客机座位不是市场上最安全的客机座位，但是与今年无关，所以(A)不对；(B)、(C)为无关选项；(D)与论点无关，所以，(B)、(C)、(D)不正确。
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