GMAT逻辑归纳题在线练习二

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　　6.(Z13-30) The percentage of households with an annual income of more than $40,000 is higher in Merton county than in any other county. However, the percentage of households with an annual income of $60,000 or more is highest in Sommer county.

　　If the statements above are true, which of the following can properly be concluded on the basis of them?

　　A. No households in Merton county has an annul income of $60,000 or more

　　B. Some households in Merton county have an annual income between $40,000 and $60,000

　　C. The number of households with an annual income of more than $40,000 is greater in Merton than in Sommer county.

　　D. Average annual household income is higher in Sommer than in Merton county.

　　E. The percentage of households with an annual income of $80,000 is higher in Sommer than in Merton county.

　　7. Among the more effective kinds of publicity that publishers can get for a new book is to have excerpts of it published in a high-circulation magazine soon before the book is published. The benefits of such excerption include not only a sure increase in sales but also a fee paid by the magazine to the book's publisher.

　　Which of the following conclusions is best supported by the information above?

　　(A) The number of people for whom seeing an excerpt of a book in a magazine provides an adequate substitute for reading the whole book is smaller than the number for whom the excerpt stimulates a desire to read the book.

　　(B) Because the financial advantage of excerpting a new book in a magazine usually accrues to the book's publisher, magazine editors are unwilling to publish excerpts from new books.

　　(C) In calculating the total number of copies that a book has sold, publishers include sales of copies of magazines that featured an excerpt of the book.

　　(D) The effectiveness of having excerpts of a book published in a magazine, measured in terms of increased sales of a book, is proportional to the circulation of the magazine in which the excerpts are published.

　　(E) Books that are suitable for excerpting in high-circulation magazines sell more copies than books that are not suitable for excerpting.

　　8. The fewer restrictions there are on the advertising of legal services, the more lawyers there are who advertise their services, and the lawyers who advertise a specific service usually charge less for that service than the lawyers who do not advertise. Therefore, if the state removes any of its current restrictions, such as the one against advertisements that do not specify fee arrangements, overall consumer legal costs will be lower than if the state retains its current restrictions.

　　If the statements above are true, which of the following must be true?

　　(A) Some lawyers who now advertise will charge more for specific services if they do not have to specify fee arrangements in the advertisements.

　　(B) More consumers will use legal services if there are fewer restrictions on the advertising of legal services.

　　(C) If the restriction against advertisements that do not specify fee arrangements is removed, more lawyers will advertise their services.

　　(D) If more lawyers advertise lower prices for specific services, some lawyers who do not advertise will also charge less than they currently charge for those services.

　　(E) If the only restrictions on the advertising of legal services were those that apply to every type of advertising, most lawyers would advertise their services.

　　9.To protect certain fledgling industries, the government of Country Z banned imports of the types of products those industries were starting to make. As a direct result, the cost of those products to the buyers, several export-dependent industries in Z, went up, sharply limiting the ability of those industries to compete effectively in their export markets.

　　Which of the following can be most properly inferred from the passage about the products whose importation was banned?

　　(A) Those products had been cheaper to import than they were to make within Country Z's fledgling industries.

　　(B) Those products were ones that Country Z was hoping to export in its turn, once the fledgling industries matured.

　　(C) Those products used to be imported from just those countries to which Country Z's exports went.

　　(D) Those products had become more and more expensive to import, which resulted in a foreign trade deficit just before the ban.

　　(E) Those products used to be imported in very small quantities, but they were essential to Country Z's.

　　10. Although aspirin has been proven to eliminate moderate fever associated with some illnesses, many doctors no longer routinely recommend its use for this purpose. A moderate fever stimulates the activity of the body's disease-fighting white blood cells and also inhibits the growth of many strains of disease-causing bacteria.

　　If the statements above are true, which of the following conclusions is most strongly supported by them?

　　A. Aspirin, an effective painkiller, alleviates the pain and discomfort of many illnesses.

　　B. Aspirin can prolong a patient's illness by eliminating moderate fever helpful in fighting some diseases.

　　C. Aspirin inhibits the growth of white blood cells, which are necessary for fighting some illnesses.

　　D. The more white blood cells a patient's body produces, the less severe the patient's illness will be.

　　E. The focus of modern medicine is on inhibiting the growth of disease-causing bacteria within the body.

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