搜题请搜索小程序“爱下问搜题”
问题 选择题

当今世界面临的三大环境问题是酸雨、臭氧空洞和温室效应，其中形成酸雨的主要原因是人们向空气中排放大量的

A．二氧化硫

B．二氧化碳

C．一氧化碳

D．粉尘

答案

答案：A

酸雨形成的罪魁祸首是酸性气体大量产生．二氧化碳、二氧化硫、一氧化碳、三种气体中二氧化硫和二氧化碳是酸性气体，但是二氧化碳溶于水生成碳酸碳酸酸性很弱，而二氧化硫溶于水生成强酸，可形成酸雨．故选A。

单项选择题

人身保险的保险事故不包括（）。

A.被保险人由于疏忽或过失对他人造成人身伤亡损害

B.被保险人年老退休

C.被保险人日常生活中可能遭到的意外伤害和疾病

D.被保险人衰老或死亡等各种不幸事故
查看答案
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.
查看答案