另外给大家几个not + weaken的例题, 希望能帮助大家巩固一下 1. A private bus company gained greater profits and provided bus service to the area at lower fares by running buses more frequently and stimulating greater rider-trip. Hoping to continue these financial trends, the company plans to replace all older buses with niew, larger buses, including some duble-decker buses. The plan of the bus company as described above assumes all of the following EXCEPT (A) the demand for bus service in the company's area of service will increase in the future (B) increased efficiency and revenues will compensate for any new expenses the company incurs (C) the new buses will be sufficiently reliable to ensure the company a net financial gain once they are in place (D) driving the new buses will be no more difficult than driving the buses they are to replace (E) the larger, double-decker buses will not face obstacles such as height and weight restrictions in the bus company's area of service Answer: D 2. Blood banks will shortly start to screen all donors for NANB hepatitis. Although the new screening tests are extimated to disqualify up to 5 percent of all prospective blood donors, they will still miss two-thirds of donors carrying NANB hepatitis. Therefore, about 10 percent of actual donors will still supply NANB-contaminated blood The argument above depends on which of the following assumptions? (A) Donors carrying NANB hepatitis do not, in a large percentage of cases, carry other infections for which reliable screening tests are routinely performed (B) Donors carrying NANB hepatitis do not, in a large perccentage of cases, develop the disease themselves at any point (C) The estimate of the number of donors who would be disqualified by tests for NANB hepatitis is an underestimate. (D) The incidence of NANB hepatitis is lower among the potential blood donors than it is in the population at large (E) The donors who will still supply NANB-contaminated blood will donate blood at the average frequency for all donors. Answer:A |