GRE最新练习题7Word文档下载推荐.docx

1、 （C） Children exposed to airborne asbestos run a greater risk of developing cancer than do adults exposed to airborne asbestos. （D） The cost of removing asbestos varies from school to school, depending on accessibility and the quantity of asbestos to be removed. （E） It is impossible to determine wit

2、h any degree of certainty if and when construction materials that contain asbestos will break down and release asbestos fibers into the air.2. Aedes albopictus, a variety of mosquito that has recently established itself in the southeastern United States, is less widespread than the indigenous swamp

3、mosquito. Both the swamp mosquito and A. albopictus can carry viruses that are sometimes fatal to humans, but A. albopictus is a greater danger to public health. Each of the following, if true, provides additional information that strengthens the judgment given about the danger to public health EXCE

4、PT: （A） Unlike the swamp mosquito, A. albopictus originated in Asia, and larvae of it were not observed in the United States before the mid- 1980s. （B） Unlike the swamp mosquito, A. albopictus tends to spend most of its adult life near human habitation. （C） Unlike swamp mosquito larvae, A. albopictu

5、s larvae survive in flower pots, tin cans, and many small household objects that hold a little water. （D） In comparison with the swamp mosquito, A. albopictus hosts a much wider variety of viruses known to cause serious diseases in humans. （E） A. albopictus seeks out a much wider range of animal hos

6、ts than does the swamp mosq- uito, and it is more likely to bite humans. Questions 3-8 The manager of a horse show is placing seven obstacles-one chicken coop, one gate, two stone walls, and three fences-on a jumping course that consists of seven positions, numbered and arranged consecutively from 1

7、 to 7. The placement of the obstacles in the seven positions must conform to the following conditions: No two fences can be placed in consecutive positions. The stone walls must be placed in consecutive positions.3. Which of the following is an acceptable placement of obstacles in the seven position

8、s, in order from the first position to the last position on the course? （A） Chicken coop, fence, gate, stone wall, fence, stone wall, fence （B） Fence, gate, fence, fence, chicken coop, stone wall, stone wall （C） Fence, stone wall, stone wall, gate, chicken coop, fence, fence （D） Gate, stone wall, st

9、one wall, fence, fence, chicken coop, fence （E） Stone wall, stone wall, fence, chicken coop, fence, gate, fence4. If one of the fences is in the third position and another is in the sixth position, which of the following must be true? （A） The chicken coop is in the seventh position. （B） The gate is

10、in the second position. （C） The gate is in the seventh position. （D） One of the stone walls is in the first position. （E） One of the stone walls is in the fourth position.5. If one of the stone walls is in the seventh position, which of the following must be FALSE? （A） The chicken coop is in the sec

11、ond position. （B） The chicken coop is in the fourth position. （C） One of the fences is in the first position. （D） One of the fences is in the second position. （E） The gate is in the fourth position.6. Which of the following CANNOT be the positions occupied by the three fences? （A） First, third, and

12、fifth （B） First, third, and sixth （C） Second, fourth, and sixth （D） Second, fourth, and seventh （E） Third, fifth, and seventh7. If a stone wall is placed immediately after the gate, which of the following is a complete and accurate list of the positions in which the gate can be placed? （A） Second, t

13、hird （B） Second, fourth （C） Third, fourth （D） Second, third, fourth （E） Third, fourth, fifth8. If the chicken coop is not placed immediately after any fence, which of the following is a complete and accurate list of the positions in which the chicken coop can be placed? （A） First, second, third （B）

14、First, third, fourth （C） First, fourth, sixth （D） First, second, third, fourth （E） First, third, fourth, sixth9. A persons cholesterol level will decline significantly if that person increases the number of meals eaten per day, but only if there is no significant increase in the amount of food eaten

15、. However, most people who increase the number of meals they eat each day will eat a lot more food as well. If the statements above are true, which of the following is most strongly supported by them? （A） For most people, cholesterol level is not significantly affected by the amount of food eaten pe

16、r day. （B） For most people, the amount of food eaten per meal is most strongly affected by the time of day at which the meal is eaten. （C） For most people, increasing the number of meals eaten per day will not result in a significantly lower cholesterol level. （D） For most people, the total amount o

17、f food eaten per day is unaffected by the number of meals eaten per day. （E） For most people, increasing the number of meals eaten per day will result in a significant change in the types of food eaten.10. A certain type of dinnerware made in Ganandia contains lead. Lead can leach into acidic foods,

18、 and Ganandians tend to eat highly acidic foods. However, the extreme rarity of lead poisoning in Ganandia indicates that the dinnerware does not contain dangerous amounts of lead. Which of the following, if true, most seriously weakens the argument above? （A） The dinnerware is produced exclusively

19、for sale outside Ganandia. （B） Ganandian foods typically are much more acidic than foods anywhere else in the world. （C） The only source of lead poisoning in Ganandia is lead that has leached into food. （D） Most people who use the dinnerware are not aware that it contains lead. （E） Acidic foods can

20、leach lead from dinnerware even if that dinnerware has a protective coating.Question 11 is based on the following graph. EFFECTIVENESS OF DRUG X IN ERADICATINGA BACTERIAL LUNG INFECTION IN ADULTPATIENTSPoint During the Course of the Infectionat Which Drug X Was First Administered to Patients（in week

21、s following the onset of symptoms）11. Drug X, which kills on contact the bacteria that cause the infection, is administered to patients by means of an aerosol inhaler. Which of the following, if true, contributes most to explaining the change in drug Xs effectiveness during the course of the infecti

22、on? （A） Symptoms of the infection usually become evident during the first 48 hours following infection. （B） Most patients with lung infections say they prefer aerosol inhalers to other means of administering antibacterial drugs. （C） In most patients taking drug X, the dosage administered is increase

23、d slightly each week until symptoms disappear. （D） In patients who have the infection, the ability to inhale becomes increasingly impaired beginning in the second week after the onset of symptoms. （E） Drug X is not administered to any patient who shows signs of suffering from secondary infections.12

24、. Sergeant Our police academy no longer requires its applicants to pass a physical examination before being admitted to the academy. As a result, several candidates with weak hearts and high blood pressure have been admitted. Hence, we can expect our future police force to have more health problems

25、than our current police force. Knowledge of each of the following would be relevant to determining the reliability of the sergeants prediction EXCEPT whether （A） police officer candidates are screened for high blood pressure before joining the police force （B） the police officer candidates who are n

26、ot healthy now are likely to be unhealthy as police officers （C） graduates of the police academy are required to pass a physical examination （D） the health of the current police officer candidates is worse than was the health of police officer candidates in the past （E） a police officers health is a

27、 reliable indicator of the officers performanceQuestions 13-16 A transcontinental railroad train has exactly eight carsJ, K, L, M, N, O, P, and Rbound for several different destinations. The positions of the cars in any ordering of the train are numbered first through eighth from the front of the tr

28、ain. Because the cars will be detached at different points, certain ordering requirements must be met, as follows:J must be somewhere behind M in the train.K must be immediately in front of or immediately behind P.O must be in front of N, and exactly one car must be between them.R must be among the frontmost four cars and somewhere behind O.13. Which of the following represents a possible order for the cars, from the front to the rear of the train