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大全-8-1,大全-8-16,大全-8-20
20. In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results. Which of the following, if true, gives the most support to the recommendation above? (A) The accepted treatment for pironoma does not have damaging side effects. (B) The laboratory test that has the lowest proportion of false positive results causes the same minor side effects as do the other laboratory tests used to detect pironoma. (C) In treating pironoma patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life. (D) The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma. (E) All laboratory tests to detect pironoma have the same proportion of false negative results. 不知道为什么选5 ,我自己选的是2
16. Sales of telephones have increased dramatically over the last year. In order to take advantage of this increase, Mammoth Industries plans to expand production of its own model of telephone, while continuing its already very extensive advertising of this product. Which of the following, if true, provides most support for the view that Mammoth Industries cannot increase its sales of telephones by adopting the plan outlined above? (A) Although it sells all of the telephones that it produces, Mammoth Industries’ share of all telephone sales has declined over the last year. (B) Mammoth Industries’ average inventory of telephones awaiting shipment to retailers has declined slightly over the last year. (C) Advertising has made the brand name of Mammoth Industries’ telephones widely known, but few consumers know that Mammoth Industries owns this brand. (D) Mammoth Industries’ telephone is one of three brands of telephone that have together accounted for the bulk of the last year’s increase in sales. (E) Despite a slight decline in the retail price, sales of Mammoth Industries’ telephones have fallen in the last year. 答案给的5,我选的是1。
1. A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibora’s extinction. Which of the following, if true, most seriously weakens the argument above? (A) The drug made from ibora bark is dispensed to doctors from a central authority. (B) The drug made from ibora bark is expensive to produce. (C) The leaves of the ibora are used in a number of medical products. (D) The ibora can be propagated from cuttings and grown under cultivation. (E) The ibora generally grows in largely inaccessible places. 答案给的5我选的4
            
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