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问题 单项选择题

（）是一个把分布于世界各地不同结构的计算机网络用各种传输介质互相连接起来的网络。

A.Internet

B.WWW

C.CERNET

D.ARP ANET

答案

参考答案：A

单项选择题

第三代移动通信系统（3rsGeneration，简称3G）比目前正使用的第二代系统有更大的系统容量和更好的通信质量，而且能在全球范围内更好地实现无线漫游，为用户提供包括语音、数据以及多媒体等在内的多种业务。3G标准主要有以下三种：WCDMA，CDMA2000与TD-SCDMA。根据以上文字，我们可以推断接下来主要介绍的内容是（）。

A．3G的各种业务及其优势

B．3G对于移动通信的意义

C．第二代通信系统与第三代通信系统的比较

D．介绍WCDMA，CDMA2000与TD-SCDMA的技术原理与模式
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填空题

Motivation is "the driving force within individuals that impels them to action." And goals are the sought-after results_____(1) motivated behavior.Motivation can be either positive or negative_____(2) direction. We may feel a driving force toward some object or condition, _____(3) a driving force away from some object or condition. For example, a person may be impelled toward a restaurant to fulfill a need, hunger, and away_____(4) an airplane to fulfill a need of safety. Some psychologists refer to positive drives_____(5) needs, wants or desires,_____(6) negative drives as fears or aversions._____ (7), though negative and positive motivational forces seem to differ dramatically_____(8) terms of physical and sometimes emotional activity, they are basically similar in_____(9) they both serve to initiate and sustain human behavior.____(10) this reason, researchers often refer _____(11) both kinds of drives or motives as needs, wants and desires.Goals, _____(12), can be either positive or negative. A positive goal is one toward_____ (13) behavior is directed and it is often referred to as an approach object. A negative goal is _____(14) from which behavior is directed away and it is sometimes referred to as an avoidance object. Since both approach and avoidance goals can be considered objectives of motivated behavior, most researchers refer to_____(15) types simply as goals. Consider this example. A middle-aged woman may wish to remain_____(16) attractive as possible. Her positive goal is to appear desirable, and_____(17) she may use a perfume advertised to make her irresistible. A negative goal may be to prevent her skin_____(18) aging, and therefore she may buy and use face creams._____(19) the former case, she uses perfume to help her achieve her positive goal — attractiveness; in the____(20) case, she uses face creams to help avoid a negative goal — wrinkled skin.
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