问题 选择题

中央电视台《今日说法》栏目曾报道了一起离奇交通事故。家住公路拐弯处的张先生和李先生家在三个月内连续遭遇了七次大卡车侧翻在自家门口的场面,第八次有辆卡车冲撞进李先生家,造成三死一伤和房屋严重损毁的血腥惨案。经公安部门和交通部门协力调查,画出的现场示意图如图所示。交警根据图示作出以下判断,你认为正确的是(   )

A.由图可知汽车在拐弯时发生侧翻是因为车作离心运动

B.由图可知汽车在拐弯时发生侧翻是因为车作向心运动

C.公路在设计上最有可能内(东)高外(西)低

D.公路在设计上最有可能外(西)高内(东)低

答案

AC

题目分析:洗车拐弯时发生侧翻,是提供的向心力满足不了需要的向心力,发生了离心运动,A正确、B错误;在实际生活中,在弯道处通常设计为外高内低,使洗车的重力与支持力的合力提供部分向心力,本题中弯道处事故频繁,极有可能是设计不合理,C正确、D错误。

单项选择题 A2型题
填空题

Some consumer researchers distinguish (1) "rational" motives and "emotional" (or "non-rational") motives. They use the term "rationality" (2) the traditional economic sense that assumes (3) consumers behave rationally when they carefully consider all alternatives (4) choose those that give them the greatest utility (i.e., satisfaction). (5) a marketing context, the term "rationality" implies that the consumer selects goods based (6) totally objective criteria, such (7) size, weight, price, and so on. "Emotional" motives imply the selection of goods (8) to personal or subjective criteria—the desire (9) individuality, pride, fear, affection or status.
The assumption underlying this distinction is (10) subjective or emotional criteria do not maximize utility or satisfaction. (11) , it is reasonable to assume that consumers always attempt to select alternatives that, (12) their view, serve to maximize satisfaction. Obviously, the assessment of satisfaction is a very personal process, based (13) the individual’s own needs as (14) as on past behavioral, social, and learning experiences. What may appear (15) irrational to an outside observer may be perfectly rational (16) the context of the consumer’s own psychological field. For example, a product purchased to enhance one’s self-image (such as a fragrance) is a perfectly rational form of consumer behavior. (17) behavior did not appear rational to the person who undertakes it (18) the time that it is undertaken, obviously he or she would not do it. (19) the distinction between rational and emotional motives does not appear to be warranted.
Some researchers go so far (20) to suggest that emphasis (21) "needs" obscures the rational, or conscious, nature of most consumer motivation. They claim that consumers act consciously (22) maximize their gains and minimize their losses; that they act not (23) subconscious drives but from rational preferences, (24) what they perceive to be (25) their own best interests.