【正文】 例 1. The population of elephant seals, reduced by hunting to perhaps a few dozen animals early in this century, has soared under federal protection during the last few decades. However, because the species repopulated itself through extensive inbreeding, it now exhibits a geic uniformity that is almost unparalleled in other species of mammals, and thus it is in far greater danger of being extinct than are most other species. Given the information in the passage above, which of the following is most likely the reason that other species of mammals are less likely than elephant seals to bee extinct? (A) Other species of mammals have large populations, so the loss of a few members of the species is not significant. (B) Other species of mammals have increased their knowledge of dangers though the experience of generation after generation of animals. (C) In other species of mammals, hunters can readily distinguish between males and females or between young animals and adults. (D) In other species of mammals, some members of the species are geically better equipped to withstand a disease or event that destroys other members of the species. (E) Other species of mammals have retained habits of caution and alertness because they have not been protected as endangered species. 2． 解釋矛盾。 英文標(biāo)志詞： explain, reason, account for, provide a rationale for, reconcile the discrepancy/paradox. 讀文章方式：不要關(guān)心文章的推導(dǎo)過程，只需從文中拎出所要解釋的對(duì)象說它對(duì)即可，用常識(shí)解題。 (E) 并未重復(fù)感染上 t。 (C) 未獲得 t 的藥物治療。 假設(shè)？（關(guān)于這種人） (A) 不可能被完全根治 t。 not + weaken 例 1. In the 1960’s longterm studies of primate behavior often used as subjects tamaris, small monkeys that were thought ideal because they require only small cages, breed frequently, and grow quickly. Field studies were not used because they were costly and difficult. Tamarinds were kept caged in malefemale pairs, because otherwise, serious fights erupted between unrelated females. On the basis of the fact that breeding occurred, tamarinds were viewed as monogamous. The view taken by the researchers concerning the monogamy of tamarinds deepened on a questionable assumption. Which of the following could have served as that assumption? (A) The suppression of fighting between related females serves to protect their mon geic inheritance. (B) Adult male tamarinds contribute to the care of tamarind infants. (C) The social system of tamarinds requires monogamous pairing. (D) Male tamarind monkeys do not display aggressive behavior in the wild. (E) The way the tamarinds were kept in cages did not affect their mating behavior. 例 2. Twenty percent of all energy consumed in the United States is consumed by home appliances. If appliances that are twice as energyefficient as those currently available are produced, this figure will eventually be reduced to about ten percent. The argument above requires which of the following assumption? (A) Homeappliance usage would not increase along with the energy efficiency of the appliances. (B) It would not be expensive to produce home appliances that are energyefficient. (C) Homeappliance manufacturers now have the technology to produce appliances that are twice as energyefficient as those currently available. (D) The cost of energy to the consumer world rise with increase in the energy efficiency of home appliances. (E) The percentage of energy consumed by home appliances will increase if existing appliances are not replaced by more energyefficient models. 例 3. Inspection system X and inspection system Y, though based on different principles, each detect all product flaws but they each also erroneously reject three percent of flawless products. Since false rejections are very costly, monkey will be saved by installing both systems, instead of either one or the other, and rejecting only products found flawed by both. The argument above requires which of the following assumption? (A) The three percent of flawless products that system X rejects are not all the same products, piece for piece, that system Y erroneously rejects. (B) It is less costly to accept a flawed product than to reject a flawless one. (C) In their price range, system as X and Y are the least errorprone inspection systems on the market. (D) Whichever system performs the second inspection needs to inspect only products not rejected by the first system. (E) Any way of detecting flaws, other than by using either system X or system Y, requires plete disassembly of the products. 例 4. 染上 t 這種病的人一次又一次重復(fù)發(fā)作。 當(dāng)加強(qiáng)來做。 橋梁型。 ,AB AB 例 1. Artificial seaweed made of plastic has been placed on a section of coast in order to reverse beach erosion. The inventor of the seaweed has concluded that the recent buildup of sand on that section of coast proves that the artificial seaweed reverses beach erosion. Which of the following, if true, world most seriously weaken the inventor’s conclusion? (A) The amount of recent sand buildup on that section of coast was less than had been predicted on the basis of the results obtained in controlled experiments. (B) Because artificial seaweed would be buried eventually by additional sand deposits on the coast, more artificial seaweed would need to be put in place every four years. (C) Artificial seaweed of another material which had been previously developed by the inventor failed to add sand to coastline in past trials. (D) The amount of recent sand buildup on that section of coast is the same as the amount of recent sand buildup on otherwise very similar sections of coast without artificial seaweed. (E) The amount of recent sand buildup on that section of coast, although considerable, is not yet enough to replace the amount lost during storms on that section of coast in the last twenty years. 例 2. The presence of microanisms that produce a toxin cause sweater to turn