GMAT考试过程中很多考生对
1.
Modern navigation systems, which are found in most of today’s commercial aircraft, are
made with low-power circuitry, which is more susceptible to interference than the
vacuum-tube circuitry found in older planes. (Fact)
During landing, navigation systems receive radio signals from the airport to guide
the plane to the runway. (Principle)
Recently, one plane with low-power circuitry veered off course during landing, its dials
dimming, when a passenger turned on a laptop computer. (Evidence)
Clearly, modern aircraft navigation systems are being put at risk by the electronic
devices that passengers carry on board, such as cassette players and laptop
computers. (Conclusion)
2.
A double-blind study, in which neither the patient nor the primary researcher knows
whether the patient is being given the drug being tested or a placebo, is the most
effective procedure for testing the efficacy of a drug. (Principle)
But we will not be able to perform such a study on this new drug, since the drug
will have various effects on the patients’ bodies, which will make us aware of
whether the patients are getting the drug or a placebo. (Anti-Consideration)
3.
The interstitial nucleus, a sub-region of the brain’s hypothalamus, is typically smaller for
male cats than for female cats. (Fact)
A neurobiologist performed autopsies on male cats who died from disease X, a disease
affecting no more than 0.5 percent of male cats, and found that these male cats had
interstitial nuclei that were as large as those generally found in female cats.
(Evidence)
Thus, the size of the interstitial nucleus determines whether or not male cats can
contract disease X,(Consideration that can be drawn from the first one)
but, the hypothalamus is known not to be causally linked to disease Y, and
disease X is a subtype of disease Y. (Fact)
4.
More and more computer programs that provide solutions to mathematical problems in
engineering are being produced, and it is thus increasingly unnecessary for practicing engineers to have a thorough understanding of fundamental mathematical
principles. (Conclusion)
Consequently, in training engineers who will work in industry, less emphasis should be
placed on mathematical principles, so that space in the engineering curriculum will
be available for other important subjects. (Conclusion)