问题 选择题

每年的2月2日为世界湿地日.作为正在建设中的巢湖生态湿地园位于滨湖新区包河大道末端,渡江战役纪念馆至徐河泄洪通道西巢湖湖区.下面不属于生态系统特点的是(  )

A.湿地是在多水和过湿的环境条件下形成的

B.湿地具有净化水源、蓄洪抗旱的作用

C.湿地是生物种类最丰富的生态系统

D.沼泽是最典型的湿地生态系统

答案

湿地生态系统是在多水和过湿条件下形成的生态系统.沼泽是典型的湿地生态系统,以沼泽植物占优势,动物的种类也很多.湿地具有净化水源、蓄洪抗旱的作用,能调节区域小气候,有地球的肾之称.它兼有水域和陆地生态系统的特点,具有极其特殊的生态功能,是地球上最重要的生命支持系统;热带雨林生态系统,降雨量高,气候稳定,由于阳光充足,因此整年基本上都很热,同时生长了不同种类的植物.动植物种类繁多,是地球环境中最具有生物多样性的地区.

故选:C

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 con sumers 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.

单项选择题