精神分析理论认为本我的活动原则是（）。 A.现实原则 B.道德原则 C.快乐原则 D

冬泳的时候，运动员从水中刚上岸时，会觉得比在水中更冷，为什么？

开放式基金单位的申购和赎回业务，可以由基金管理人委托其他机构代为办理。 ( )

对于工作了一天，很劳累的人来说，翻看一些电影画报之类的书籍是很有必要的，但是，对于一个正在求学的大学生来说，应该把更多的时间精力放在专业书籍的阅读上来。这就意味着( )

A．正在求学的大学生不应该翻看电影画报之类的书籍

B．人们在翻书时应以专业书籍为主，电影画报之类的书籍尽量少看

C．工作的人适合看电影画报之类的书籍，大学生适合看专业书籍

D．一些电影画报类的消遣书也有存在的必要

下列4种不同数制表示的数中，数值最小的一个是______。

A．八进制数52

B．十进制数44

C．十六进制数2B

D．二进制数101001

Solving a problem can be broken down into several steps. First, the problem must be identified correctly. Psychologists refer (1) this step as problem representation. For many problems, figuring (2) which information is relevant and (3) is extraneous can be difficult and can interfere (4) arriving at a good solution. Clearly, before a problem can be solved, it must be obvious (5) the problem is, however, this is not as easy (6) it might seem. One obstacle to efficient problem representation is functional fixedness, that is, allowing preconceived notions and even prejudices (7) color the facts. Most people tend (8) see objects and events in certain fixed ways, and by being inflexible in viewing the problem, they may be unable to notice the tools (9) the solution. Once the problem is identified accurately, (10) , the second step consists (11) considering the alternatives for a solution. A common way to evaluate alternatives is to write them (12) and then make a list (13) advantages and disadvantages for each solution. Here again, people may be limited by prior experiences. Often people adopt mental sets (14) lead them to the same problem-solving strategies that were successful for problems (15) the past. Although that can be helpful most (16) the time, sometimes a new situation requires a different strategy. (17) that case, the mental set must be abandoned, (18) new alternatives must be explored.
After the alternatives have been compared, a strategy must be selected (19) among them. One way to avoid becoming mired in the options is (20) try the best option with a view to abandoning it for another (21) the results are unfavorable. This attitude allows many people to move on expeditiously (22) the next step—action. The strategy selected must be implemented and tested. If it solves the problem, no further action is necessary, but if (23) , then the cycle begins again, starting (24) problem identification. By continuing to review the problem (25) repeat the problem-solving steps, the solution can be improved upon and refined.