3. A severe drought can actually lessen the total amount of government aid that United States farmers receive as a group. The government pays farmers the amount, if any, by which the market price at which crops are actually sold falls short of a preset target price per bushel for the crops. The drought of 1983, for example, caused farm-program payments to drop by $10 billion.
Given the information above, which of the following, if true, best explains why the drought of 1983 resulted in a reduction in farm-program payments?
key: Due to the drought of 1983, united States farmers had smaller harvests and thus received a higher market price for the 1983 crop than for the larger crop of the preceding year.
4. Technically a given category of insurance policy is underpriced if, over time, claims against it plus expenses associated with it exceed total income from premiums. But premium income can be invested and will then yield returns of its own. Therefore, an underpriced policy does not represent a net loss in every case.
The argument above is based on which of the following assumptions?
key: (E) The claims against at least some underpriced policies do not require paying out all of the premium income from those policies as soon as it is earned.
5. Over the last century, paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.
Which of the following, if true, would enable the conclusion of the argument to be properly drawn?
key:No geographical area ever supports more than three similar species at the same time.
请帮忙分析，谢谢！
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发表于 2003-10-17 17:29:00
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