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2 practice test questions

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jamesk486 Master | Next Rank: 500 Posts Default Avatar
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2 practice test questions

Post Wed Apr 11, 2007 7:13 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Several airlines have recently intensified their fierce competition for business by offering tickets, that if purchased 2 days in advance, cost as much as 40% less than the heretofore lowest-priced "super-saver" tickets, which require a 30day advance purchase. The airline's long-term gains from tickets bought under this new plan will be enourmous bc unlike earlier discount tickets, these are not refundable. The author assumes which of the following about discounted airline tickets in predicting long-term gains in airline revenue?

    A. More discounted, advance purchase tickets are purchased than are actually used.

    B. Tickets requring 30day advance purchase are not profitable for airlines.

    C.Few business travelers have taken advance of 30day advance purchase tickets

    D. Airlines will have to discontinue offering 30day advance purchase tickets when they begin offering 2-day advance purchase tickets.

    E. The majority of the 2 day advance purchase tickets offered by a given airline will be sold to passengers who have not previous flown on that airline.

    (I thought the answer was B, but its A)

    The mastodon, a large mammal resembling today's elephant, became extinct at the end of the Ice Age. Scientists once attributed the mastodon's extinction to the disappearance of overgreen forests at the end of the ice Age. More recently, however, scientists have rejected that theory, hypothesizing isntead that the mastodon's extinction was caused by the draining of glacial wetlands.

    Which of the following, if recently discovered, would help to account for the change in the accepted explanation of the mastodon's extinction?

    A. When the Ice Age ended, many forests died off, endangering the food supply for herbivores that fed primarily on evergreens.

    B. As glaciers reced at the end of the Ice Age, glacial wetlands drained, leaving a new topography of hills and plains.

    C. Bacteria found in mastodon remains are similar to backteria found in the remains of species that are known to have fed on evergreens.

    D. The mastodon's diet consisted primarily of water plants such as marsh grasses and water lilies.

    E. Evergreen forests were inhabited by many species of large mammals until the end of the Ice Age.

    (I thought the answer was A, but its D..I don't know if I misread the correct answer, but i'm not really sure why its D!)

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    Cybermusings Legendary Member Default Avatar
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    Post Wed Apr 11, 2007 10:03 am
    A - Even though tickets purchases 2 days in advance are almost 40% cheaper than "super saver" tickets, the tickets offer a long term benefit to the airline in terms of revenue. This is a glaring anomaly or inconsistency which is best explained by Choice A. If advance purchase tickets were bought only to be refunded later they would dent the airline profitability. Hence in such a scenario tickets purchased 2 days in advance will be much more profitable

    Cybermusings Legendary Member Default Avatar
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    Post Wed Apr 11, 2007 10:11 am
    The mastodon, a large mammal resembling today's elephant, became extinct at the end of the Ice Age. Scientists once attributed the mastodon's extinction to the disappearance of overgreen forests at the end of the ice Age. More recently, however, scientists have rejected that theory, hypothesizing isntead that the mastodon's extinction was caused by the draining of glacial wetlands.

    Which of the following, if recently discovered, would help to account for the change in the accepted explanation of the mastodon's extinction?

    A. When the Ice Age ended, many forests died off, endangering the food supply for herbivores that fed primarily on evergreens.

    B. As glaciers reced at the end of the Ice Age, glacial wetlands drained, leaving a new topography of hills and plains.

    C. Bacteria found in mastodon remains are similar to backteria found in the remains of species that are known to have fed on evergreens.

    D. The mastodon's diet consisted primarily of water plants such as marsh grasses and water lilies.

    E. Evergreen forests were inhabited by many species of large mammals until the end of the Ice Age.

    Choice D; It explains why the draining of the glacial wetlands led to the extinction of the mastodon. Since the mammal depended on water plants for it's diet, the disappearence of the same led to the destruction of its food source and hence catalysed its extinction.

    Choice A: It is clearly wrong because it supports the
    former theory of scientists - namely that the mammals died due to the destruction of evergreen forests. However, the new theory is that the mammals died due to the draining of wetlands, and Choice A does nothing to support this claim

    jamesk486 Master | Next Rank: 500 Posts Default Avatar
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    Post Wed Apr 11, 2007 3:35 pm
    Ic..for the 2nd question, for some reason I kept thinking bc they never said that the 1st theory was wrong, to find some reason that may connect the 2 theories, rather than only explain a cause for the 2nd theory..
    Thanks for the help~

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