LSAT模拟试题:LSAT模拟试题TEST4逻辑1c
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11. In 1990 major engine repairs were performed on 10 percent of the cars that had been built by the National Motor Company in the 1970s and that were still registered. However, the corresponding figure for the cars that the National Motor Company had manufactured in the 1960s was only five percent.

  Which of the following, if true, most helps to explain the discrepancy1

  (A) Government motor vehicle regulations generally require all cars, whether old or new, to be inspected for emission2 levels prior to registration3.

  (B) Owners of new cars tend to drive their cars more carefully than do owners of old cars.

  (C) The older a car is, the more likely it is to be discarded for scrap4 rather than repaired when major engine work is needed to keep the car in operation.

  (D) The cars that the National Motor Company built in the 1970s incorporated simplified engine designs that made the engines less complicated than those of earlier models.

  (E) Many of the repairs that were performed on the cars that the National Motor Company built in the 1960s could have been avoided if periodic routine maintenance had been performed.

  12. No mathematician5 today would flatly refuse to accept the results of an enormous computation as an adequate demonstration6 of the truth of a theorem. In 1976, however, this was not the case. Some mathematicians7 at that time refused to accept the results of a complex computer demonstration of a very simple mapping theorem. Although some mathematicians still hold a strong belief that a simple theorem ought to have a short, simple proof, in fact, some simple theorems have required enormous proofs.

  If all of the statements in the passage are true, which one of the following must also be true?

  (A) Today, some mathematicians who believe that a simple theorem ought to have a simple proof would consider accepting the results of an enormous computation as a demonstration of the truth of a theorem.

  (B) Some individuals who believe that a simple theorem ought to have a simple proof are not mathematicians.

  (C) Today, some individuals who refuse to accept the results of an enormous computation as a demonstration of the truth of a theorem believe that a simple theorem ought to have a simple proof.

  (D) Some individuals who do not believe that a simple theorem ought to have a simple proof would not be willing to accept the results of an enormous computation as proof of a complex theorem.

  (E) Some nonmathematicians do not believe that a simple theorem ought to have a simple proof.

  13. If you climb mountains, you will not live to a ripe old age. But you will be bored unless you climb mountains. Therefore, if you live to a ripe old age you will have been bored.

  Which of the following most closely parallels the reasoning in the arguments above?

  (A) If you do not try to swim, you will not learn how to swim. But you will not be safe in boats if you do not learn how to swim. Therefore, you must try to swim.

  (B) If you do not play golf, you will not enjoy the weekend. But you will be tired next week unless you relax during the weekend. Therefore, to enjoy the weekend, you will have to relax by playing golf.

  (C) If you work for your candidate, you will not improve your guitar playing. But you will neglect your civic8 duty unless you work for your candidate. Therefore, if you improve your guitar playing, you will have neglected your civic duty.

  (D) If you do not train, you will not be a good athlete. But you will become exhausted9 easily unless you train. Therefore, if you train, you will not have become exhausted easily.

  (E) If you spend all of your money, you will not become wealthy. But you will become hungry unless you spend all of your money. Therefore, if you become wealthy, you will not become hungry.

  14. Marine10 biologists had hypothesized that lobsters12 kept together in lobster11 traps eat one another in response to hunger. Periodic checking of lobster traps, however, has revealed instances of lobsters sharing traps together for weeks. Eight lobsters even shared one trap together for two months without eating one another. The marine biologists' hypothesis, therefore, is clearly wrong.

  The argument against the marine biologists' hypothesis is based on which one of the following assumptions?

  (A) Lobsters not caught in lobster traps have been observed eating one another.

  (B) Two months is the longest known period during which eight or more lobsters have been trapped together.

  (C) It is unusual to find as many as eight lobsters caught together in one single trap.

  (D) Members of other marine species sometimes eat their own kind when no other food sources are available.

  (E) Any food that the eight lobsters in the trap might have obtained was not enough to ward13 off hunger.

  15. Eight years ago hunting was banned in Greenfield County on the grounds that hunting endangers public safety. Now the deer population in the county is six times what it was before the ban. Deer are invading residential14 areas. Damaging property and causing motor vehicle accidents that result in serious injury to motorists. Since there were never any hunting=related injuries in the county, clearly the ban was not only unnecessary but has created a danger to public safety that would not otherwise exist.

  Which one of the following, if true, provides the strongest additional support for the conclusion above?

  (A) In surrounding counties, where hunting is permitted, the size of the deer population has not increased in the last eight years.

  (B) Motor vehicle accidents involving deer often result in damage to the vehicle, injury to the motorist, or both.

  (C) When deer populations increase beyond optimal15 size, disease and malnutrition16 become more widespread among the deer herds17.

  (D) In residential areas in the county, many residents provide food and salt for deer.

  (E) Deer can cause extensive damage to ornamental shrubs and trees by chewing on twigs and saplings



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1 discrepancy ul3zA     
n.不同;不符;差异;矛盾
参考例句:
  • The discrepancy in their ages seemed not to matter.他们之间年龄的差异似乎没有多大关系。
  • There was a discrepancy in the two reports of the accident.关于那次事故的两则报道有不一致之处。
2 emission vjnz4     
n.发出物,散发物;发出,散发
参考例句:
  • Rigorous measures will be taken to reduce the total pollutant emission.采取严格有力措施,降低污染物排放总量。
  • Finally,the way to effectively control particulate emission is pointed out.最后,指出有效降低颗粒排放的方向。
3 registration ASKzO     
n.登记,注册,挂号
参考例句:
  • Marriage without registration is not recognized by law.法律不承认未登记的婚姻。
  • What's your registration number?你挂的是几号?
4 scrap JDFzf     
n.碎片;废料;v.废弃,报废
参考例句:
  • A man comes round regularly collecting scrap.有个男人定时来收废品。
  • Sell that car for scrap.把那辆汽车当残品卖了吧。
5 mathematician aoPz2p     
n.数学家
参考例句:
  • The man with his back to the camera is a mathematician.背对着照相机的人是位数学家。
  • The mathematician analyzed his figures again.这位数学家再次分析研究了他的这些数字。
6 demonstration 9waxo     
n.表明,示范,论证,示威
参考例句:
  • His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
  • He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。
7 mathematicians bca28c194cb123ba0303d3afafc32cb4     
数学家( mathematician的名词复数 )
参考例句:
  • Do you suppose our mathematicians are unequal to that? 你以为我们的数学家做不到这一点吗? 来自英汉文学
  • Mathematicians can solve problems with two variables. 数学家们可以用两个变数来解决问题。 来自哲学部分
8 civic Fqczn     
adj.城市的,都市的,市民的,公民的
参考例句:
  • I feel it is my civic duty to vote.我认为投票选举是我作为公民的义务。
  • The civic leaders helped to forward the project.市政府领导者协助促进工程的进展。
9 exhausted 7taz4r     
adj.极其疲惫的,精疲力尽的
参考例句:
  • It was a long haul home and we arrived exhausted.搬运回家的这段路程特别长,到家时我们已筋疲力尽。
  • Jenny was exhausted by the hustle of city life.珍妮被城市生活的忙乱弄得筋疲力尽。
10 marine 77Izo     
adj.海的;海生的;航海的;海事的;n.水兵
参考例句:
  • Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
  • When the war broke out,he volunteered for the Marine Corps.战争爆发时,他自愿参加了海军陆战队。
11 lobster w8Yzm     
n.龙虾,龙虾肉
参考例句:
  • The lobster is a shellfish.龙虾是水生贝壳动物。
  • I like lobster but it does not like me.我喜欢吃龙虾,但它不适宜于我的健康。
12 lobsters 67c1952945bc98558012e9740c2ba11b     
龙虾( lobster的名词复数 ); 龙虾肉
参考例句:
  • I have no idea about how to prepare those cuttlefish and lobsters. 我对如何烹调那些乌贼和龙虾毫无概念。
  • She sold me a couple of live lobsters. 她卖了几只活龙虾给我。
13 ward LhbwY     
n.守卫,监护,病房,行政区,由监护人或法院保护的人(尤指儿童);vt.守护,躲开
参考例句:
  • The hospital has a medical ward and a surgical ward.这家医院有内科病房和外科病房。
  • During the evening picnic,I'll carry a torch to ward off the bugs.傍晚野餐时,我要点根火把,抵挡蚊虫。
14 residential kkrzY3     
adj.提供住宿的;居住的;住宅的
参考例句:
  • The mayor inspected the residential section of the city.市长视察了该市的住宅区。
  • The residential blocks were integrated with the rest of the college.住宿区与学院其他部分结合在了一起。
15 optimal zmDzhM     
adj.最适宜的;最理想的;最令人满意的
参考例句:
  • What is the optimal mix of private and public property rights in natural resources?私人和国家的自然资源产权的最适宜的组合是什么?
  • Optimal path planning is a key link for the sailing contest.帆船最优行驶路径规划是帆船比赛取胜的关键环节。
16 malnutrition kAhxX     
n.营养不良
参考例句:
  • In Africa, there are a lot of children suffering from severe malnutrition.在非洲有大批严重营养不良的孩子。
  • It is a classic case of malnutrition. 这是营养不良的典型病例。
17 herds 0a162615f6eafc3312659a54a8cdac0f     
兽群( herd的名词复数 ); 牧群; 人群; 群众
参考例句:
  • Regularly at daybreak they drive their herds to the pasture. 每天天一亮他们就把牲畜赶到草场上去。
  • There we saw herds of cows grazing on the pasture. 我们在那里看到一群群的牛在草地上吃草。
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