35. The milk of many mammals contains cannabinoids, substances that are known to stimulate certain receptors in the brain. To investigate the function of cannabinoids, researchers injected newborn mice with a chemical that is known to block cannabinoides from reaching their receptors in the brain. The injected mice showed far less interest in feeding than normal newborn mice do. Therefore, cannabinoids probably function to stimulate the appetite. Which of the following is an assumption on which the argument depends? A. Newborn mice do not normally ingest any substance other than their mothers’ milk. B. Cannabinoids are the only substances in mammals’ milk that stimulate the appetite. C. The mothers of newborn mice do not normally make any effort to encourage their babies to feed. D. The milk of mammals would be less nutritious if it did not contain cannabinoids. E. The chemical that blocks cannabinoids from stimulating their brain receptors does not independently inhibit the appetite. 为甚么选E啊。。。我想选B。
第二题，就问下句子怎么翻译 Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-rays because their orthopedists are concerned about possibly having misjudged the stability of the fracture. When a number of follow-up x-rays were reviewed, however, all the fractures that had initially been judged stable were found to have healed correctly. Therefore, it is a waste of money to order follow-up x-rays of ankle fracture initially judged stable. Which of the following, if true, most strengthens the argument? A. Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly. B. Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle. C. X-rays of patients of many different orthopedists working in several hospitals were reviewed. D. The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray. E. Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones. Answer: B怎么翻译啊
If the chemical injected DOES independently inhibit the appetite, then the conclusion that cannobinoids inhibiting appetite would fall apart. Thus, E) is the correct answer.
If the chemical injected DOES independently inhibit the appetite, then the conclusion that cannobinoids inhibiting appetite would fall apart. Thus, E) is the correct answer.
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发表于 2011-12-12 21:49:49
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