24. An unbiased observer of everyday encounters in Western societies would surely not find many instances of unkindness by people under 65 toward people over 65. There are undoubtedly incidents of unkindness based on age, and these warrant reproof. However, the very fact that such reproof occurs and is generally accepted implies that our Western societies basically respect the elderly. The same conclusion can be drawn from a recent survey finding: 71 percent of the under 65 population agreed with the statement that “people over 65 receive too little respect from society”, while only 44percent of the over-65 population, the target of the alleged irreverence agreed with it.
The author concludes that Western societies basically respect the elderly partly because.
(A) people under 65 are just as kind to people over 65 as they are to people of their own age group
(B) survey data suggest that fewer people over 65 than under 65 get too little respect
(C) disrespect for the elderly does not go so far as to result in actual harm
(D) survey data suggest that people over 65 are more aware of incidents involving disrespect to the elderly than are people under 65
(E) incidents of unkindness to the elderly are neither common nor generally accepted in Western societies
答案：E，请问B为什么不对？
16. Investigators concluded that human failure was not responsible for the fatal airplane crash last August, and since that time new and more stringent rules for identifying and reporting mechanical problems have been in effect. That accounts for the fact that reports of airplane mechanical problems have increased in frequency by 50 percent since last August.
Which one of the following is an assumption underlying the argument in the passage?
(A) Airplane travel is still relatively safe, despite the increase in reported mechanical problems.
(B) Mechanical problems in airplanes have increased dramatically since last August.
(C) Mechanical problems in airplanes have not increased by 50 percent since last August.
(D) Airlines are less reluctant to report mechanical problems than they previously were.
(E) Mechanical problems in airplanes have become easier to detect since last August.
