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GMAT逻辑假设题练习题六

2018-06-13 16:23:00 来源:网络GMAT资料下载

  想要更充分的备考GMAT逻辑,大家还是需要对考试中出现的各种题型有一个比较全面的认识。因此新东方在线GMAT频道就为大家整理了一些题型,供大家参考练习。

点击查看》》》【GMAT逻辑题型讲义汇总】

  16.(Z) In a study conducted in Pennsylvania, servers in various restaurants wrote “Thank you” on randomly selected bills before presenting the bills to their customers. Tips on these bills were an average of three percentage points higher than tips on bills without the message. Therefore, if servers in Pennsylvania regularly wrote “Thank you” on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.

  Which of the following is an assumption on which the argument relies?

  A. The “Thank you” messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant.

  B. Regularly seeing “Thank you” written on their bills would not lead restaurant patrons to revert to their earlier tipping habits.

  C. The written “Thank you” reminds restaurant patrons that tips constitute a significant part of the income of many food servers.

  D. The rate at which people tip food servers in Pennsylvania does not vary with how expensive a restaurant is.

  E. Virtually all patrons of the Pennsylvania restaurants in the study who were given a bill with “Thank you” written on it left a larger tip than they otherwise would have.

  17.(Z)The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease. The skeletons do show deposits of tetracycline, an antibiotic produced by a bacterium common in Nubian soil. This bacterium can flourish on the dried grain used for making two staples of the Nubian diet, beer and bread. Thus, tetracycline in their food probably explains the low incidence of typhus among ancient Nubians.

  Which of the following is an assumption on which the argument relies?

  A. Infectious diseases other than typhus to which the ancient Nubians were exposed are unaffected by tetracycline.

  B. Tetracycline is not rendered ineffective as an antibiotic by exposure to the processes involved in making bread and beer.

  C. Typhus cannot be transmitted by ingesting bread or beer contaminated with the infectious agents of this disease.

  D. Bread and beer were the only items in the diet of the ancient Nubians which could have contained tetracycline.

  E. Typhus is generally fatal.

  18(Z). Because it was long thought that few people would watch lengthy televised political messages, most televised political advertisements, like commercial advertisements, took the form of short messages. Last year, however, one candidate produced a half-hour-long advertisement. During the half hour the advertisement was aired, a substantial portion of the viewing public tuned into the advertisement. Clearly, then, many more people are interested in watching lengthy televised political messages than was previously thought.

  Which of the following is an assumption on which the argument depends?

  A. The candidate’s ratings improved significantly as a result of the half-hour-long political advertisement.

  B. Political advertisements have become increasingly influential in determining voters’ decisions at the polls.

  C. Many people would appreciate the opportunity to become better acquainted with political candidates’ views on current political issues.

  D. Most people who are interested in political issues watch television regularly.

  E. Most of the viewers who tuned in to the candidate’s half-hour-long advertisement last year did not change channels after the first few minutes.

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