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Passengers are usually required to board airplanes by section——a group of several contiguous rows——from back to front. But as a result, passengers within each section get in each other's way while loading their baggage in the overhead bins, thus skewing the boarding process. Every extra minute an airplane is grounded costs the airlines thousands of dollars. Therefore, to save money, Sky Flight always plans to require passengers to board by seat type, starting with window seats and ending with aisle seat. Which of the following, if true, would make Sky Flight’s plan most likely to succeed in achieving its goal? A Sky Flight has already tried various other ways to reduce the amount of time each of its airplanes is grounded, with varying success. B In most airplanes, the boarding process is significantly slower by passengers in aisle seats getting up so that other passengers can reach window and center seats. C Sky Flight’s plan will also require all passengers with a given seat type to board the airplane by section, from front to back. D When passengers in back rows must wait in the aisle for passengers in front rows to load their baggage in the overhead bins, the boarding process is slowed. E Sky Flight has already substantially cut boarding times by allowing passengers to board in any order, rather than by section.
Research taught one group of students a new mathematical system using abstract symbols, such circle and diamonds, and another group using concrete scenarios, such as combining liquids in measuring cups. The students who learned the system using symbols later performed much better than the others, on average, in a children's game, requiring them to apply their knowledge in a new situation. The researchers concluded that the specific details of the concrete scenarios had distracted the other group from the underlying mathematical concepts. Which of the following, if true, would most weaken researchers’ reasoning? A The children's game used symbols in a way similar to the way the abstract symbols had been used in teaching the first group of students. B When the experiment was repeated with new students who all played the game before being taught the mathematical system, both group reported played equally well. C Several students in the first group reported that the abstract symbols had distracted them from the underlying mathematical concepts. D The first group of students did not perform better than second on task that were identical to the concrete scenarios with which the second group had been taught. E The children's game primarily involved combining liquids in measuring cup.
参考答案：BA
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发表于 2021-10-13 16:50:41
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