逻辑题目在GMAT考试中是有一定的难度的，如果考生在备考的过程中做逻辑题目还有一定的困难，那么应该多加练习。本文小编为大家带来了
6. Lourdes: Dietary fiber is an important part of a healthful diet. Experts recommend that adults consume 20 to 35 grams of fiber a day.
Kyra: But a daily intake of fiber that is significantly above that recommended level interferes with mineral absorption, especially the absorption of calcium. The public should be told to cut back on fiber intake
Which one of the following, if true, most undermines Kyra’s recommendation?
(A) Among adults, the average consumption of dietary fiber is at present approximately 10 grams a day.
(B) The more a food is processed, the more the fiber is broken down and the lower the fiber content.
(C) Many foodstuffs that are excellent sources of fiber are economical and readily available.
(D) Adequate calcium intake helps prevent the decrease in bone mass known as osteoporosis.
(E) Many foodstuffs that are excellent sources of fiber are popular with consumers.
7. A certain retailer promotes merchandise by using the following policy:
At all times there is either a “manager’s sale” or a “holiday sale” or both going on. All sales are run for exactly one calendar month. In any given month, if a manager wishes to clear out particular line of merchandise, then a managers’ sale is declared. If a holiday falls within the calendar month and there is excess merchandise in the warehouse, then a holiday sale is declared.
However, there is no holiday that falls within the month of August and, in that month, the warehouse never contains excess merchandise.
Which one of the following can be concluded from the passage?
(A) If a holiday falls within a given month and there is no extra merchandise in the warehouse that month, then a holiday sale is declared.
(B) If a holiday sale is not being run, then it is the month of August.
(C) If a manger’s sale is being run in some month, then there is no excess merchandise in the warehouse in that month.
(D) If there is not a manger’s sale being run some month, then there is holiday sale being run in that month.
(E) If there is no excess merchandise in the warehouse, then it is the month of August.
8. Prominent business executives often play active roles in United States presidential campaigns as fundraisers or backroom strategists. But few actually seek to become president themselves. Throughout history the great majority of those who have sought to become president have been Lawyers, military leaders, or full-time politicians. This is understandable, for the personality and skills that make for success in business do not make for success in politics. Business is largely hierarchical, whereas politics is coordinative. As a result, business executives tend to be uncomfortable with compromises and power sharing, which are inherent in polities.
Which one of the following, if true, most seriously weakens the proposed explanation of why business executives do not run for president?
(A) Many of the most active presidential fundraisers and backroom strategists are themselves politicians.
(B) Military leaders are generally no more comfortable with compromises and power sharing than are business executives.
(C) Some of the skills needed to become a successful lawyer are different from some of those needed to become a successful military leader.
(D) Some former presidents have engaged in business ventures after leaving office.
(E) Some hierarchically structured companies have been major financial supporters of candidates for president.
9. A scientific theory is a good theory if it satisfies two requirements: It must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements, and it must make definite predictions about the results of future observations. For example, Aristotle’s cosmological theory, which claimed that everything was made out of four elements—earth, air, fire, and water—satisfied the first requirement, but it did not make any definite prediction. Thus, Aristotle’s cosmological theory was not a good theory.
If all the statements in the passage are true, each of the following must also be true EXCEPT:
(A) Prediction about the results of future observations must be made by any good scientific theory.
(B) Observation of physical phenomena was not a major concern in Aristotle’s cosmological theory.
(C) Four elements can be the basis of a scientific model that is simple enough to meet the simplicity criterion of a good theory.
(D) A scientific model that contains many elements is not a good theory.
(E) Aristotle’s cosmological theory described a large class of observations in terms of only four elements.
10. Millions of irreplaceable exhibits in natural history museums are currently allowed to decay. Yet without analyses of eggs from museums, the studies linking pesticides with the decline of birds of prey would have been impossible. Therefore, funds must be raised to preserve at least those exhibits that will be most valuable to science in the future.
The argument presupposes that
(A) if a museum exhibit is irreplaceable, its preservation is of an importance that overrides economic considerations
(B) the scientific analysis of museum exhibits can be performed in nondestructive way
(C) eggs of extinct species should be analyzed to increase knowledge of genetic relationships among species
(D) it can be known at this time what data will be of most use to scientific investigators in the future
(E) the decay of organic material in natural history exhibits is natural and cannot be prevented